August 2026 Newsletter Recap: Expanded Capabilities. New Solutions. Trusted Ductmate Quality & Performance.

Posted on by Ductmate Industries

Expanded Capabilities. New Solutions. Trusted Ductmate Quality & Performance.

Ductmate is excited to announce the launch of our new Formulated Products Division, an important investment in the future of our products, capabilities, and customers.

Over the past year, we have made extensive upgrades in our production facility, including automating our sealant production lines and doubling our capacity. These upgrades will allow us to better support our customers, strengthen our existing product offerings, and bring new solutions to the HVAC industry.

This new division will support the continued development of sealants, adhesives, encapsulating edge coatings, cleaners and lubricants, sealing tapes, gaskets, and more. New product releases designed to meet evolving application and performance needs are coming soon.

Although we’re expanding, one thing will never change: our commitment to quality. You can continue to expect the same proven quality, reliable service, and trusted performance that have defined the Ductmate name since 1978.

A new division. Expanded capabilities. The same Ductmate quality and performance you trust. We look forward to sharing what’s next!

NEW & FEATURED PRODUCTS

INSTAseal

INSTAseal® is a peel‑and‑stick foil-backed butyl tape sealing solution designed to create a durable, air and weather‑tight seal on metal duct, flexible duct, and duct board, ideal for low, medium, and high‑pressure ductwork when speed and reliability matter for consistent application of duct sealant, every time.

Available in 2”, 3”, and 4” widths, INSTAseal is designed for indoor or outdoor use, holds up in all weather (including cold conditions), and resists UV exposure, mold, and mildew to help seals stay reliable over time.

With an easy tear and simple press‑down application, you can move quickly without cutting tools, helping cut installation time and save labor. Its instant adhesion means you can seal and immediately test or pressurize the system, and even make modifications or repairs while the system is operating, helping reduce downtime.

D-ZINC

D-ZINC is an industrial degalvanizer spray designed to help keep roll-forming machines, shears, punch press dies, and notchers free from galvanizing buildup. It works by softening, loosening, and flaking away galvanizing debris while also cutting quickly through galvanized scale and rust. D-ZINC is safe for use on metals, alloys, rubber, and most painted surfaces, making it a versatile maintenance solution for a wide range of equipment.

Formulated for easy spray-and-wipe application, D-ZINC not only cleans but also helps protect equipment and maintain product quality. With daily use, it helps keep machines clear of buildup while acting as a high-quality lubricant that supports smooth, efficient operation, even on Ductmate’s own flange systems.

EVERseal Spray

EVERseal™ Spray is a cost-effective, sprayable water-based duct sealant designed for sealing metal ductwork in shop and fabrication applications. Its spray-grade formula applies easily with a common airless sprayer, helping deliver time and labor savings over traditional application methods while providing a dependable solution for indoor and outdoor use.

Built for performance and compliance, EVERseal Spray is suitable for applications up to 15″ w.g. and offers excellent UV, flexibility, and mold-resistant properties. It is UL GREENGUARD Gold Certified, UL 181 B-M Listed, UL 723 Classified, LEED compliant, and meets applicable SCAQMD standards, making it a reliable and efficient, professional-grade duct sealing solution.

EnviroSeal & EnviroSeal Plus

EnviroSeal™ is a smooth, high-viscosity water-based duct sealant designed for sealing joints, seams, and duct wall penetrations. Built for all HVAC ductwork applications, this indoor and outdoor-grade sealant remains flexible, is paintable, and provides excellent mold and water resistance for dependable long-term performance.

With EnviroSeal, you can protect duct systems against air leaks while ensuring project compliance. It is GREENGUARD Gold certified, UL 181B-M and UL 181A-M Listed, UL 723 Classified, LEED compliant, meets applicable SCAQMD and CDPH standards, and conforms to NFPA 90A & 90B requirements.

Also available in EnviroSeal Plus with fiber reinforcement.

Quick-Stick CA

Quick-Stick™ CA is a California-compliant duct liner spray adhesive designed to provide quick tack and a permanent bond in a single application. Its high-build, pressure-sensitive formula bonds porous substrates and all common forms of HVAC insulation, including fiberglass, polyester, and elastomeric materials. The aggressive adhesive is also suitable for bonding foam, metal, and wood.

Quick-Stick CA is methylene chloride-free, HAPS-free, and formulated without ozone-depleting substances. Its low-VOC formula complies with California SCAQMD Rule 1168, making it an ideal choice for HVAC duct liner applications where performance, convenience, and regulatory compliance are essential.

The self-contained, disposable system makes Quick-Stick CA easy to transport and apply on the job site while providing excellent coverage. Its high level of tack helps installers work quickly and efficiently, reducing the need for multiple applications while creating a strong, reliable bond. Quick-Stick CA is also offered in an aerosol can for smaller applications and convenient portability.

INDUSTRY NEWS & MORE

Spray Adhesive Best Practices: A Guide to Proper Application

Learn essential spray adhesive best practices that improve bond strength, boost efficiency, and help deliver consistent installation results.

Click here to read the full article.

Applying Sealant with a Brush: Thickness, Technique, and Common Mistakes

Discover the best practices for brush-applied duct sealant to achieve consistent coverage, lasting durability, and dependable performance.

Click here to read the full article.

What the Methylene Chloride Ban Means for the HVAC Industry

Understand the EPA’s methylene chloride ban and its impact on HVAC products, compliance responsibilities, and industry operations.

Click here to read the full article.

Rapidmate Exclusive Advanced Labor-Saving Features Video

Tired of machine jams, slow reloads, and uneven seals during duct assembly? The Rapidmate Corner and Fastener System is the most advanced, labor-saving corner lineup in the industry. Engineered specifically to overcome the common failure points of traditional corners, Rapidmate delivers unprecedented speed and reliability in both the shop and the field.

PROMOTIONS

Cable Shark Cable Hanging System

Take 10% off all Cable Shark products with the promo code SHARKWEEK26 from July 27 through August 31, 2026, during this limited-time promotion!

*Market restrictions may apply.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

Sign up for Ductmate’s e-Newsletter

Don’t miss our monthly e-newsletter!  Click here and sign up to receive exclusive Ductmate news and announcements, product information, promotions, industry news, and more, right in your inbox.

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Applying Sealant with a Brush: Thickness, Technique, and Common Mistakes

Posted on by Ductmate Industries

Effective duct sealing starts with careful preparation and proper application. Applying sealant at a consistent thickness, using the right brush technique, and allowing it to cure fully helps produce a durable seal and dependable system performance.

Follow these best practices to achieve a consistent, durable, and airtight seal when sealing ductwork with a brush.

Preparing the Duct Surface

Apply sealant only to clean, dry, and sound surfaces. Dirt, dust, oil, fabrication lubricants, moisture, rust, and loose material can prevent the sealant from properly adhering to the metal.

Inspect each connection before sealing. Joints should be fully seated and fastened. Poorly fitted connections or large openings should be corrected mechanically rather than filled with excessive sealant.

Before beginning:

    ✅ Confirm that joints are properly fitted and fastened
    ✅ Remove oil, dust, moisture, rust, and loose material
    ✅ Review the product’s technical and safety data sheets
    ✅ Verify acceptable application temperatures
    ✅ Identify all joints, seams, fasteners, and penetrations requiring sealant

The specific locations to be sealed will depend on the duct construction, sealing class, and project specifications. Sealing locations may include transverse joints and longitudinal seams, elbows and fitting connections, takeoffs and collars, access-door frames, and duct-wall penetrations.

Selecting and Positioning the Brush

Brush selection may depend on the sealant’s consistency. A 2- or 3-inch chip brush with short, stiff bristles generally provides good control around joints, corners, fittings, and fasteners. Heavy or fiber-reinforced sealants may require firmer bristles.

✅ Use a clean brush with straight, firm bristles to achieve even coverage and keep debris out of the sealant.
❌ Avoid brushes with loose, bent, or hardened bristles, which can create gaps, produce uneven coverage, or leave debris in the sealant.

✅ Hold the brush at a moderate angle, typically around 30 to 45 degrees.
❌ Do not press so hard that the brush scrapes sealant away from the joint.

✅ Brush across the seam to work material into small gaps and irregularities.
❌ Do not brush only parallel to the seam, which may leave the joint insufficiently covered.

✅ Use lighter finishing strokes to smooth the surface and feather the edges.

Application techniques will vary slightly depending on the shape and construction of the ductwork. Pay close attention to the duct profile to ensure complete coverage in areas that are easy to miss.

⬛ On rectangular duct, pay close attention to corners, standing seams, drives, and changes in profile.
⚫ On round duct, apply sealant around the entire circumference and inspect the underside carefully.

Building a Consistent Layer

Load the brush with enough sealant to bridge the joint and cover the surrounding metal. Make sure screw heads, rivets, corners, and other potential leakage points are completely sealed.

If reinforcing mesh is required, apply a base layer of sealant, embed the mesh without gaps or wrinkles, and cover it completely with additional material.

IMPORTANT: Avoid applying sealant as a thin, paint-like film. The material must form a continuous layer at the wet-film thickness specified by the manufacturer.

Work in manageable sections and avoid brushing sealant after it begins to skin over. Overworking partially set material can create drag marks, gaps, or poor adhesion.

Applying the Correct Amount of Sealant

Applying more sealant than specified does not necessarily create a better seal.

Too little sealant can cause: gaps, pinholes, exposed seam edges, incomplete coverage, and air leakage.

Too much sealant can cause: sagging, cracking, uneven shrinkage, longer curing times, and a dry outer skin with uncured material underneath.

Aim for a wet-film thickness of approximately 60 to 80 mils during normal application, unless otherwise directed by the product instructions.

✅ Use a wet-film gauge to confirm that the sealant falls within the recommended range.
❌ If the layer is noticeably thicker than a nickel, the sealant is likely overapplied.

If multiple coats are needed, follow the manufacturer’s instructions for thickness, drying, and recoating.

Measuring Wet-Film Thickness

Use a wet-film gauge, also called a mil gauge, to confirm the thickness of freshly applied sealant:

  1. Press the gauge straight into the wet material until it contacts the duct.
  2. Remove the gauge without dragging or sliding it.
  3. Locate the highest tooth that is wet.
  4. Find the next tooth that is dry.
  5. Read the thickness between those two measurements.

Take readings at several points, including seam intersections, corners, vertical surfaces, and the underside of the duct.

✅ Measure the sealant while it is still wet.
❌ Do not rely only on appearance. A seal may look complete while still being too thin.

Inspecting and Curing the Seal

Before leaving the application area, inspect for:

    ✅ Complete coverage across every joint
    ✅ Covered fasteners and seam edges
    ✅ Consistent thickness
    ❌ Pinholes, gaps, thin areas, or exposed metal
    ❌ Runs, sags, debris, or excessive buildup

Correct defects while the sealant is still workable. Allow the material to cure fully before pressurizing, insulating, painting, or concealing the ductwork. A surface that feels dry may still be uncured underneath.

Choosing the Right Sealant

Ductmate offers a variety of water-based and solvent-based duct sealants to meet different application, budget, and jobsite needs:

PROseal® & FIBERseal®

  • Premium, water-based formulations that deliver dependable performance in demanding HVAC applications.
  • PROseal features a smooth texture, while FIBERseal adds fiber reinforcement for enhanced strength.

EVERseal™ & EZ-Seal®

  • Commercial-grade formulations that provide reliable performance at a cost-effective price point.
  • EVERseal features a smooth texture, while EZ-Seal adds fiber reinforcement for enhanced strength.

EnviroSeal™ & EnviroSeal Plus

  • High-viscosity, water-based formulations that offer excellent mold and water resistance for indoor and outdoor installations.
  • EnviroSeal features a smooth texture, while EnviroSeal Plus adds fiber reinforcement for enhanced strength.

SOLVseal™

  • A premium, low-VOC solvent-based formulation that dries quickly, making it well suited for shorter project timelines.
  • Offers minimal shrinkage, high water resistance, and strong sealing performance for demanding jobsite conditions.

Regardless of which one you choose, Ductmate sealants are extremely resistant to cracking and will remain permanently flexible.  This is especially useful for applying sealant in the shop and then transporting it to other locations or a project site.

Alongside excellent adhesion to metal, they have a lower brush drag, resulting in better spreadability and allowing for a more even and consistent coating, ensuring an airtight, leak-free seal.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

Spray Adhesive Best Practices: A Guide to Proper Application

Posted on by Ductmate Industries

Spray adhesives provide a fast and efficient way to bond materials during ductwork fabrication and installation. Proper application and precautions are important for achieving a strong, consistent bond.

Follow these best practices to help improve adhesive performance and produce more reliable results.

Preparing the Materials & Work Areas

Before applying spray adhesive, make sure the surfaces being bonded are clean, dry, and free of dust, dirt, oil, and other contaminants. Adhesive applied over a contaminated surface may stick to the debris instead of the material and weaken the bond.

The temperature of the adhesive, materials, and work area can also affect application. Always check the product’s technical data sheet for acceptable storage and application temperatures.

Before beginning:

    ✅ Confirm that the adhesive is compatible with both materials
    ✅ Clean and dry the application surfaces
    ✅ Protect surrounding areas from overspray
    ✅ Make sure the workspace has adequate ventilation
    ✅ Review the product label, technical data sheet, and safety data sheet

Correct Spray Techniques

✅ Hold the spray applicator at a consistent distance and angle from the surface.
❌ Spraying too closely can concentrate adhesive in one area, and spraying from too far away can create excess overspray and inconsistent coverage.

✅ Apply the adhesive with smooth, controlled passes. Keep the applicator moving at a steady speed and slightly overlap each pass to prevent gaps.
❌ Avoid uneven passes and missed areas, especially along edges and corners where material is more likely to lift.

✅ Consistent coverage is more important than simply applying more adhesive.
❌ A heavier application does not necessarily create a stronger bond.

Applying the Correct Amount of Adhesive

One of the most common application mistakes people make is using too much or too little adhesive. The goal is to achieve the coverage specified without oversaturation.

Too little adhesive can cause: incomplete coverage, loose edges, material separation, or premature bond failure.

Too much adhesive can cause: longer drying times, uneven bonding, trapped solvent or moisture, and unnecessary waste.

IMPORTANT: The correct amount of adhesive should cover 90% of the surface area of the duct board/metal. Thickness in mils is not specified, but you should use the minimum amount of adhesive necessary to securely hold the material in place prior to weld pinning.

The Ductmate Sales team is always available to answer questions and assist if needed; don’t hesitate to reach out!

Bonding Materials & Cure Time

Make sure the materials are properly aligned before they touch. Some adhesives develop an immediate bond, making repositioning difficult. Once aligned, apply firm and even pressure across the entire bonded surface. Pay particular attention to edges, corners, seams, and curved areas. If required, use a manufacturer-recommended roller to promote full contact and remove bubbles or wrinkles.

Initial tack does not always mean the adhesive has reached full strength. The bond may continue to develop after the materials are joined. Moving, bending, fabricating, or installing the bonded materials too soon can interfere with the curing process. Protect the assembly from stress and unsuitable environmental conditions for the full period specified by the manufacturer.

Choosing the Right Spray Adhesive

The correct adhesive depends on the materials being bonded, the fabrication process, and the conditions the finished assembly will experience. Water-based and solvent-based products may have different application requirements, drying characteristics, and safety considerations.

Before choosing an adhesive, consider material compatibility, application temperature, cure time, expected service conditions, coverage, VOC requirements, and applicable codes or specifications. Always confirm that the selected adhesive is approved for the intended application.

Ductmate offers a variety of spray-grade duct liner adhesives:

Gecko Glue Silver & Gold:

  • Sustainable Choice: The water-based formula offers an environmentally friendly alternative to solvent-based adhesives and is LEED-compliant, CDPH-compliant, low in VOCs, and UL-classified.
  • Industry-Leading Performance: Gecko Glue provides one of the fastest drying times among water-based adhesives, along with market-leading wet tack, strong dry tack, and a smooth finish.
  • Versatility for Different Duct Liners: Designed for a variety of duct liners and insulation materials, including PolyArmor, elastomeric, and fiberglass.
  • Cost-Effective Bulk Options: Available in 275-gallon totes that hold the equivalent of five 55-gallon drums, helping save storage space, reduce changeover time, and lower labor costs. The totes are also compatible with existing coil lines and standard drum-spraying equipment.

Gecko Glue Concentrate:

  • Reduced Costs: Gecko Glue Concentrate can be mixed on-site in just 10–15 minutes, helping reduce pre-mixed drum and shipping costs. The concentrate is also ideal for smaller projects or facilities with limited storage space.
  • Extended Product Life: Gecko Glue Concentrate offers an extended shelf life when stored unmixed and maintains a shelf life of 6–18 months after mixing.

Quick-Stick CA:

  • Fast, Strong Bond: The quick-tack, high-build formula provides aggressive initial grab and creates a strong, permanent bond in a single application.
  • Versatile Use: Designed for fiberglass, polyester, and elastomeric duct liners, Quick-Stick CA can also effectively bond foam, metal, and wood.
  • California Compliant: The methylene chloride-free formula complies with California SCAQMD Rule 1168, making it suitable for projects with strict adhesive requirements.
  • Low-Emission Formula: Low in VOCs and formulated without ozone-depleting substances or hazardous air pollutants for a more environmentally responsible option.
  • Convenient Formats: Available in self-contained cylinders for larger applications and portable aerosol cans for smaller projects, repairs, and touch-ups.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

July 2026 Newsletter Recap: Safety You Can Sea (Shark Week Special Edition)

Posted on by Ductmate Industries

Safety You Can Sea: Cable Shark Cable Hanging System

Dive into Shark Week with Cable Shark!

The Cable Shark® Cable Hanging System delivers unparalleled strength, reliability, and safety you can “sea” with built-in load indicators and an easy-to-use Cable Shark load adjuster tool that ensures proper loading and safety every time for peace of mind.

Sink your teeth into safer installs with a system designed and engineered specifically to meet the unique demands and challenges of hanging commercial HVAC duct systems without leaving your crew in deep water.

With a variety of versatile accessories, site kits, and cable options, Cable Shark is ready to make waves on your next job!

CABLE SHARK CABLE HANGING SYSTEM & MORE

Mechanisms & Cable Options

The Cable Shark CS125 and CS250 lbs-rated systems consist of high-strength die-cast steel mechanisms and serrated jaws with precision-matched zinc-coated steel cable, resulting in cutting-edge cable hanging systems that meet the SMACNA upper and lower attachment standards, are ICC-ES AC284 Certified, and have an unsurpassed safety factor rating.

For the system to work properly, both components must be used together. The Cable Shark Mechanism uses two serrated steel wedges that allow the Cable Shark Cable to pass through in one direction. Then, when a load is applied to the Cable Shark Cable in the opposite direction, the wedges grip the Cable Shark Cable and press it against the Cable Shark Mechanism housing, preventing it from moving.

Cable options include 500’ and 1000’ spools and various cut-to-length options with attachments.

Site Kits

Cable Shark site kits contain everything you need for on-site installations, conveniently stored in a single bucket.

CS125 Site Kit includes:

  • CS125 Cable Shark Mechanism – QTY 200
  • CSW125500 500 ft Spool – QTY 2
  • HWRC Cable Cutter – QTY 1
  • CSDSTOOL Cable Shark Load Adjuster – QTY 1

CS250 Site Kit includes:

  • CS250 Cable Shark Mechanism – QTY 100
  • CSW250500 500 ft Spool – QTY 1
  • HWRC Cable Cutter – QTY 1
  • CSDSTOOL Cable Shark Load Adjuster – QTY 1

Accessories

Ductmate offers a wide range of high-performance brackets and accessories to be used in conjunction with the Cable Shark system for versatility on even the most challenging installations.

This lineup features Rectangular Duct Brackets, Round Duct Strap Brackets, Cable Shark Hanging Adapters, Pivoting Eyelets, ¼” Threaded Studs, 3/8” Threaded Stud, and Rectangular Duct Corner Saddles.

Load Adjuster Tool

The Cable Shark Load Adjuster ensures proper loading and safety every time for peace of mind.  Compact and user-friendly, the tool can be easily carried in a toolbelt or pocket.

Cable Cutters

Cable Shark Cable Cutters are high-quality cutters compatible with Cable Shark Cable that provide a clean cut with less effort.  Tin snips, diagonal cutters, and electrical cable cutters fray the end of the Cable Shark Cable and prevent it from sliding into the Cable Shark Mechanism correctly.

CS125/CS250 Certifications

  • SMACNA Testing and Research Institute Verification – Meets SMACNA’s upper and lower attachment construction standards if used per manufacturer’s installation guidelines
  • Seismic Certified to ANSI/ASHRAE Standard 171-2017
  • ICC-ES AC284 Certified (ESR-4742)
    • 2022 California Building Code Compliant
    • 2022 California Residential Code Compliant
    • 2022 California Mechanical Code Compliant
    • 2023 County of Los Angeles Building Code
    • 2023 County of Los Angeles Residential Code
    • 2023 County of Los Angeles Mechanical Code

* Certifications apply to the CS125 and CS250 mechanisms only

*IMPORTANT DISCLAIMER: The Cable Shark Cable Hanging System consists of Cable Shark Cable and the Cable Shark Mechanism. For the system to work properly, both components must be used together. Before using or installing the product, read and follow all product information and warnings. Do not use the product in a manner that is inconsistent with the manufacturer’s printed information. Ensure that all employees installing the Cable Shark System have been properly trained on using this product. RESPONSIBILITY FOR THE PROPER AND SAFE USE OF THE CABLE RESTS WITH THE USER.

LIMITED TIME CABLE SHARK PROMOTION

Take 10% off Cable Shark with the promo code SHARKWEEK26 from July 27 through August 31, 2026, during this limited-time promotion!

*Market restrictions may apply.

TRADITIONAL HANGERS

Ductmate offers a variety of traditional hangers that are cost-efficient, easy to use, and require no prep work, making ductwork installation easier, faster, and safer.

Pre-Punched Trapeze Duct Hanger

The Pre-Punched Trapeze Duct Hanger is a specialized duct support channel designed to support rectangular and oval ductwork. Made from 18-gauge galvanized steel and measuring 2″ high x 1.5″ wide, this lightweight and easy-to-cut product arrives at the job site in 20-foot lengths, pre-punched with oval holes at 2-inch intervals for immediate use.

Its versatile design eliminates the need for hard-to-cut and punch-angle iron, and it can be standardized to replace multiple hanger types, thereby potentially reducing inventory costs. The hanger’s neat, professional appearance is complemented by the option to insert heavy neoprene gaskets for sound isolation, and it can be secured to structural members up to 1.5 inches thick using its beam clamp.

Isolation Hanger Type SI

The Isolation Hanger Type SI is a sturdy, vibration-isolating steel hanging bracket featuring a rubber isolation pad, designed for use with threaded rods to suspend ductwork and other equipment, isolating vibration at its source.

Capable of supporting up to 1100 lbs (499 kg), the sturdy tension brackets have a much greater load-bearing capacity than the corresponding threaded rods.  Its styrene-butadiene rubber padding isolates vibration at its source, preventing distracting noise transmission and extending the lifespan of HVAC equipment by reducing wear and tear. The outside dimensions match standard wrench sizes, so no special tools are required, making installation easy. The open space of the bracket corresponds to the width of the nut, preventing it from turning.

Round Duct Hanger

Install your round ductwork quickly and effortlessly with our Round Duct Hanger. This prefabricated hanger features a ¼” x 20 carriage bolt with a zinc-plated wing nut and lock washer for secure, tool-free installation. Available in a range of sizes from 3” to 10” in 1” increments and 12” to 34” in 2” increments to perfectly fit your ductwork. Constructed from durable 20-gauge galvanized metal for long-lasting performance.

Round Duct Strap Bracket

Our versatile Round Duct Strap Bracket supports ductwork up to a generous 50” diameter. Designed to accommodate 1” wide strapping in gauges 18-22, it offers flexible installation options. Easily attach your preferred hanging system with compatibility for Cable Shark Hanger Adapters, 3/8” and 5/16” rods, or eyebolts. This bracket is a crucial component for secure and efficient ductwork suspension when used in conjunction with strapping and your chosen hanging method.

Hanger Strap

Our versatile Hanger Strap makes it easy to tackle hanging ductwork. Available in convenient boxes, bundles, or coils and in galvanized and stainless-steel options, this essential component is perfect for even the most challenging installations.

Vinyl Duct Strapping

Quickly and easily secure your flexible or lightweight ductwork with our Vinyl Duct Strapping. This strong, all-purpose fabric is perfect for small-scale installations, and its durable construction ensures reliable support for hanging your ductwork.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

Sign up for Ductmate’s e-Newsletter

Don’t miss our monthly e-newsletter!  Click here and sign up to receive exclusive Ductmate news and announcements, product information, promotions, industry news, and more, right in your inbox.

Connect With Us on Social Media

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ULtimate Door Lineup: Performance, Safety, and Options That Matter

Posted on by Ductmate Industries

Design and engineering choices when choosing a grease duct access door can mean the difference between life and death for building occupants and first responders.  When life safety and building performance are your number one priority, Ductmate’s ULtimate grease duct access doors are superior to the competition.

What are the ULtimate Doors?

Ductmate’s ULtimate access doors provide easy access to high-temperature air ducts and grease duct systems and were designed for applications requiring UL 1978 listing.

Ductmate offers the ULtimate Door (sandwich-style), ULtimate Door II (weld-on), and the ULtimate Door Round (sandwich-style for round duct) that provide the following special characteristics:

  • UL 1978 listed
  • Superior life safety protection
  • Minimal penetration into the duct
  • Grease and liquid tight
  • Meets NFPA96 standards
  • Dramatically reduces installation time
  • 11 ga. 304SS or Black Iron
  • ICC tested with leading wraps
  • No special tools required
  • Quick and easy access

Unlike shop-fabricated and inferior, light gauge grease duct door substitutes, the high-performance line of ULtimate Grease Duct Access Doors from Ductmate are designed to meet the challenges. They are the most extensively engineered, tested, and ruggedly constructed doors available in the industry.

Why make your job more difficult?

The ULtimate Doors are designed to save you time and money without compromising safety.  The sandwich style of the ULtimate Door and ULtimate Door Round allows them to be completely removed or installed in minutes.  No frames to install, no holes to drill, and no clips needed, dramatically reducing field installation time and labor.

When working in the field, time is money, so why make your job more difficult than it has to be? Use the access doors that keep you safe and don’t waste your time.

Can I customize my order of ULtimate Doors?

Ductmate can custom make virtually any size ULtimate Door, starting at 6” x 6” all the way up to 24” x 24”. Consult Ductmate customer service for more information.

Additionally, the ULtimate line of access doors can be ordered in stainless steel or black iron and several optional design features for virtually any configuration.

As always, we’re happy to work with you to deliver the products you need.

Where can I buy the ULtimate Doors?

Ready to buy the ULtimate Doors? Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

March 2026 Newsletter Recap: The Right Access Door for Any Job– Every Time

Posted on by Ductmate Industries

The Right Access Door for Any Job– Every Time

Ductmate’s access doors make inspection, cleaning, and maintenance faster and easier.

Many of our doors are designed for quick installation with time-saving features such as self‑adhesive cut templates, no frames to install, and effortless opening/closing that doesn’t require special tools, helping you to save time in the field.

Whether you’re working with rectangular or round ductwork, our variety of Sandwich®-style, ULtimate™, and square-framed access doors ensures you’ll have the right access door for any job– every time.

Sandwich-Style Doors:

Sandwich-style doors are available in insulated and uninsulated options. They are extremely versatile and can be used for a wide range of applications, including high-temperature applications, duct cleaning, or viewing ultraviolet lights in air handling units.

Our Sandwich-style doors include: Rectangular Duct Sandwich Door, Round Duct Sandwich Door, F1-High Temp Sandwich Door, F2 Grease Duct Sandwich Door, Observation Sandwich Door, Single-Pane Sandwich Observation Door, AHU Viewport Access Panel, Clean-Out Sandwich Door, and Circular Clean-Out Sandwich Door.

UL-Listed ULtimate Doors:

Our ULtimate grease duct access doors provide easy access to high-temperature air ducts and grease duct systems and were designed for applications requiring UL 1978 listing. Unlike shop-fabricated and inferior, light-gauge grease duct door substitutes, this high-performance lineup is designed to meet the challenges. They are the most extensively engineered, tested, and ruggedly constructed doors available in the industry.

Included in this lineup are: ULtimate Door (Sandwich-style), ULtimate Door Round (Sandwich-style for round duct), and ULtimate Door II (weld-on).

Design and engineering choices when choosing a grease duct access door can mean the difference between life and death for building occupants and first responders.  When life safety and building performance are your number one priority, Ductmate’s ULtimate grease duct access doors are superior to the competition.

Square-Framed Doors:

Square-Framed access doors are a low-pressure door for rectangular ducts that provide easy access to air ducts and units. Developed as an inexpensive alternative to our Sandwich-style access doors for low-pressure applications, Square-Framed doors meet SMACNA requirements for low-pressure doors. They are insulated with 1” high-density fiberglass insulation and are double gasketed with a closed-cell, cross-linked polyethylene gasket.

Square-framed doors are available with tab-in or press-on style frames, both designed to ensure quick and easy installation. Our square-framed doors include: Hinge & Cam Square-Framed Door, Cam Latch Square-Framed Door, and High-Pressure Cammed Square Framed Door.

All tab-in frames are manufactured with fastened corners for increased strength and feature an improved dovetail design for metal duct, 1” duct board, and 1 ½” duct board. Press-on frames include a durable double-sided adhesive gasket, allowing for easier and safer installation on metal ductwork.

For high-pressure applications, our all-cam tab-in version is also available in a high-pressure square frame door, with a pressure rating of -10”/+10” w.g.

MORE FEATURED PRODUCTS

Moisture Drain

Our Moisture Drain provides a reliable, cost‑effective solution for managing unwanted moisture in ductwork and drain pans, helping to prevent leaks, corrosion, and potential system damage.

Designed for fast and easy installation, the drain forms a leak‑proof connection that efficiently directs collected moisture away from the duct system. Its unique funnel design draws the surrounding duct area inward, ensuring consistent and complete drainage even in the most challenging moisture conditions.

Circular Clean-Out Sandwich Access Doors

Our Circular Clean-Out Sandwich access doors are designed for professional duct cleaners who need quick, clean, repeatable access to ductwork and air handling units without the time-consuming steps and messy finishes of traditional clean-out methods. Offered in 8″, 10″, and 12″, this door is precision-built to be a perfect fit for securing the metal vacuum-hose adapter, helping crews set up faster and work more efficiently.

Installation is simplified without the need for metal plates, drilling screws, tape, or sealant, resulting in less labor, fewer reworks, and no duct distortion from re-drilling. Simply cut the opening, insert the door at an angle, and hand-tighten the wingnuts for a neat, professional appearance and easy access every time. It’s one of the smartest and most cost-effective doors in our lineup.

INDUSTRY NEWS & MORE

Hollow Block Kits for Hurricane Air Brace Now Available

Hollow block installation kits are now available for Hurricane Air Brace installation and mounting on hollow concrete block. Ordering information can be found on the product page or spec sheet.

Using Fire Wrap Systems With Ductmate Access Doors: Ordering & Modification Guide

While Ductmate doesn’t sell fire wrap, it is commonly used with some of our access doors. This guide breaks down what Ductmate access doors pair with common fire wrap systems, including what to order, what to specify up front, and the simple door modifications that will help you to install wrapped ductwork with less hassle.

Want to learn more? Click here to read the full article.

Clean HVAC Preventative Measures & Ductmate Solutions You Can Clearly See

Ductmate’s solutions show how our smart, preventative solutions help facilities maintain healthier indoor air quality with confidence. Originally designed for hospitals and healthcare, our Observation Access Doors enable clear, safe visual inspection of filtration systems and UV technology without disrupting airflow or system integrity. With durable construction, high‑impact safety glass, and a leak‑free, pressure‑rated design, these solutions make it easy to demonstrate a visible commitment to clean, well‑maintained HVAC systems.

Click here to read the full article.

Customize What Matters: Ductmate Access Door Options Built Around Your Requirements

When a job requires solutions beyond standard sizes and configurations, Ductmate offers flexible ordering options to help you get the right access door for the application. From custom dimensions to insulation, bolt modifications, and specialty alloys, these choices make it easier to meet your job requirements.

Ready to explore your options? Click here to read the full article.

UPCOMING EVENTS

NADCA Annual Meeting & Expo

March 23-25, 2026 | Colorado Springs, CO

NADCA’s 37th Annual Meeting & Expo will bring together industry professionals involved in the inspection, cleaning, and restoration of HVAC systems.

Attending the show? Be sure to stop by to see us at booth #413!

IKECA Annual Meeting & Expo

April 15-17, 2026 | Indianapolis, IN

IKECA’s Annual Membership Meeting & Expo brings together industry professionals involved in the commercial kitchen cleaning industry who are committed to fire prevention and life safety.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

Sign up for Ductmate’s e-Newsletter

Don’t miss our monthly e-newsletter!  Click here and sign up to receive exclusive Ductmate news and announcements, product information, promotions, industry news, and more, right in your inbox.

Connect With Us on Social Media

Follow Ductmate on our Facebook, Instagram, LinkedIn, and YouTube social media accounts to stay up-to-date with the latest news!

Customize What Matters: Ductmate Access Door Options Built Around Your Requirements

Posted on by Ductmate Industries

When a job requires solutions beyond standard sizes and configurations, Ductmate offers flexible ordering options to help you get the right access door for the application. From custom dimensions to insulation, bolt modifications, and specialty alloys, these choices make it easier to meet your job requirements.

Custom Door Sizes

Need a door size that fits the job, not the other way around?

Ductmate can custom-make virtually any size ULtimate™ Door, from 6” x 6” to 24” x 24”. Additionally, all of our square-framed doors (Hinge & Cam, Cam Latch, and High-Pressure Cammed) are available in custom sizes from 6” x 6” to 36” x 36”, in both square and rectangular-shaped options.

Insulated or Uninsulated Options

Different applications call for different performance needs, and insulation is often a key consideration.

A variety of our Sandwich®-style doors (Rectangular, Round, and Circular Clean-Out) are available for order with or without insulation to suit a wide range of applications.

Bolt Length Modifications

For installations that require additional clearance or compatibility, including fire wrap installation, bolt length modifications can make all the difference.

Both the ULtimate Door and ULtimate Door II can be purchased with insulation kits that are specifically designed to allow our doors to be used with fire wrap. The kit includes the door, extension bolts, and an outer plate. The extension bolts, which are roughly 6”, allow the fire wrap to slide over the bolts and accept the outer plate.

We do not offer insulation kits for the ULtimate Door Round due to the different diameter options. However, extension bolts and outer plates are still available separately.

Our F1 High-Temperature and F2 Grease Duct doors are also commonly used with fire wrap. These doors can be ordered with modified bolts, either 4” or 6”, to help accept the fire wrap.

Click here to learn more about using Ductmate access doors with fire wrap.

Specialty Alloys

When standard materials aren’t the right fit, specialty alloys may be the best option.

All of our access doors are available in specialty alloys. Check their product pages and/or spec sheets for more ordering information and a list of available alloys.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

blog posts:

Using Fire Wrap Systems With Ductmate Access Doors: Ordering & Modification Guide

Posted on by Ductmate Industries

What Are Fire Wraps & What Are They Used For?

A fire wrap is a fire-resistant, non-combustible, flexible, high-temperature insulation blanket installed around metal ductwork as part of a fire-rated enclosure system. It creates a passive fire-resistive barrier (typically 1-2 hours) on ductwork to prevent the spread of fire, smoke, heat, and toxic gases throughout a building.

Instead of “actively” detecting or extinguishing flames (like sprinklers or alarms), passive fire protection focuses on containing fire and heat long enough to support safe evacuation and maintain the system’s integrity.

Fire wrap is often required for commercial kitchen grease ducts (where grease can ignite and burn intensely), exhaust ducts, and dryer vents. It is critical to follow each manufacturer’s installation instructions as fire wraps are listed as a complete, specific assembly; changing details during installation, like layer count, fastening, overlaps, or penetration treatments, can compromise the system’s rated performance.

How Are Ductmate Access Doors Used With Fire Wraps?

Ductmate does not make or sell fire wrap; however, it is commonly used with several of our access doors, including our ULtimate™ doors and the F1 and F2 doors, which are referenced in many International Code Council (ICC) Evaluation Service Reports for major fire wrap manufacturers. These doors are designed and engineered to meet or exceed all applicable standards and to ensure ease of use with fire wrap.

ULtimate Doors

Both the ULtimate Door and ULtimate Door II can be purchased with insulation kits specifically designed to allow our doors to be used with fire wrap or can be purchased separately. The kit includes the ULtimate door, extension bolts, and an outer plate. The extension bolts, which are roughly 6”, allow the fire wrap to slide over the bolts and connect the access door to the outer plate. The outer plate encapsulates the insulation over the access door, protecting the integrity of the access point and identifying the access point for duct cleaners and fire departments.

Ductmate does not offer insulation kits for the ULtimate Door Round due to the different diameter options. However, extension bolts and outer plates are still available separately.

Custom outer plates are made using a formula that helps us determine the exact diameter needed for the outer plate:

Insulation thickness x number of layers x 2 + duct diameter. (Ex: Diameter of the duct is 14” using 3 layers of 1.5” insulation. (1.5”x3) x 2+14” = 23” outer plate.)

If you need assistance calculating the diameter of the outer plate, please contact Ductmate Customer Service, and they will be happy to assist you.

F1 & F2 Doors

Ductmate’s F1 High-Temperature and F2 Grease Duct doors are also commonly used with fire wrap. These doors can be ordered with modified bolts, either 4” or 6”, to help accept the fire wrap. We do not provide outer plates for these doors; however, they are commonly made in the field with extra sheet metal.

If you are installing our doors with a fire wrap system, please be sure to specify when placing your order to ensure that you receive the correct doors that will allow for easy installation. For more information, consult Ductmate Customer Service.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

blog posts:

February 2026 Newsletter Recap: What You Might Have Missed at AHR

Posted on by Ductmate Industries

What You Might Have Missed at AHR

Ductmate headed to the fabulous Las Vegas, Nevada, on February 2-4 for the 2026 AHR Expo. Over the three days of the expo, the Ductmate team met with attendees to showcase our even more fabulous products, including duct connectors, sealants and adhesives, access doors, and so much more.

Couldn’t make it to the show? Check out our most popular product offerings below!

DUCTMATE PRODUCTS

Designed with a “solutions first” mindset, Ductmate products have consistently delivered dependable quality that simplifies installation and enhances HVAC system efficiency for over 45 years.

Don’t see what you’re looking for? Browse our catalog to see our full offering. You might be surprised to find the solutions you never knew you needed.

Duct Connectors

Ductmate offers a wide range of high-quality and versatile duct connectors for rectangular, round, and oval ductwork. Engineered with self-sealing technology, our connectors improve structural integrity while making installation faster and easier. From premium solutions to cost‑effective options, Ductmate provides high-quality connectors to suit any project and budget.

Rectangular:

DM ‘25’/’35’/’45’® Self-Sealing Connector System, WDCI™ J&H Connector System, and PROflex™ Flexible Connector System

Round:

Spiralmate® & Ventmate, Quick-Sleeve™, and ECONOflange™ Round

Oval:

ECONOflange Oval

Access Doors

We offer a variety of insulated, leak-proof rectangular and round access doors for a wide range of applications. Consult Ductmate Customer Service for custom-size door options.

Sandwich-Style Doors:

Sandwich-style doors are available in insulated and uninsulated options. They are extremely versatile and can be used for a wide range of applications, including high-temperature applications, duct cleaning, or viewing ultraviolet lights in air handling units.

Our Sandwich-style doors include: Rectangular Duct Sandwich Door, Round Duct Sandwich Door, F1-High Temp Sandwich Door, F2 Grease Duct Sandwich Door, Observation Sandwich Door, Single-Pane Sandwich Observation Door, AHU Viewport Access Panel, Clean-Out Sandwich Door, and Circular Clean-Out Sandwich Door.

UL-Listed Doors:

Our ULtimate grease duct access doors provide easy access to high-temperature air ducts and grease duct systems and were designed for applications requiring UL 1978 listing. Unlike shop-fabricated and inferior, light-gauge grease duct door substitutes, this high-performance lineup is designed to meet the challenges. They are the most extensively engineered, tested, and ruggedly constructed doors available in the industry.

Included in this lineup are: ULtimate™ Door (Sandwich-style), ULtimate Door Round (Sandwich-style for round duct), and ULtimate Door II (weld-on).

Square-Framed:

Square-framed doors provide easy access to rectangular air ducts and units.

Our square-framed doors include: Hinge & Cam Square-Framed Door, Cam Latch Square-Framed Door, and High-Pressure Cammed Square Framed Door.

PolyArmor Duct Liner Insulation

Our PolyArmorTM polyester duct liner insulation has emerged as a superior alternative to traditional insulation materials, offering a compelling blend of performance, installation, and environmental benefits.

Sealants, Adhesives, and Edge Coatings

When it comes to quality and labor savings, our formulated product lines of sealants, adhesives, and encapsulating edge coatings are the top choice.

Sealants:

Ductmate’s duct sealants are formulated to provide exceptional performance for both indoor and outdoor applications. They are uniquely designed and formulated to address common challenges, such as mildew resistance, meeting stringent UL specifications, and maintaining flexibility even in demanding conditions. Alongside excellent adhesion to metal, our sealants have a lower brush drag, resulting in better spreadability and allowing for a more even and consistent coating, ensuring an airtight, leak-free seal.

Our line of sealants includes: PROseal®, PROseal Spray, FIBERseal®, EVERseal™, EZ-Seal®, and SOLVseal™.

Adhesives:

Ductmate’s adhesives are formulated to deliver strong, long-lasting bonds that can withstand temperature fluctuations, vibrations, and pressure changes within HVAC systems. We offer a diverse range of adhesives suited for different applications.

Our line of adhesives includes: Gecko Glue™ Gold, Gecko Glue Silver, Gecko Glue Concentrate, Quick-Stick™ CA (Cylinder), and Quick-Stick Aerosol Can.

Encapsulating Edge Coatings:

Encapsulating edge coatings are designed to create a durable, flexible barrier that seals and protects the edges of ductwork, preventing air leaks and improving energy efficiency. Our edge coatings are specifically formulated to be resistant to moisture, mold, and mildew, ensuring long-lasting protection.

Our line of encapsulating edge coatings includes: Quick-Stick Fiber Guard, Super Liner Seal (SLS™), and LAG-IT™.

Gaskets

Gasket is necessary to ensure airtight, leak-proof connections at joints, flanges, and access points. We offer different gasket options for a wide range of applications to provide long-lasting and durable bonds.

Our line of gaskets includes: DM 440™ Butyl Gasket Tape & Patches, Neoprene Gasket Tape, 5511M™ Mastic, and Sticky Tape.

Rapidmate Corners

The Rapidmate corner lineup is the most advanced, labor-saving corner system in the industry, with advanced design features that save time in both the shop and the field. The Rapidmate corner and fastener system provides an alternative method of efficiently assembling, aligning, connecting, and securing commercial rectangular duct systems.

Rapidmate is also available in our patented time-saving Strap-Pak™ 80 Magazines for automatic corner-insertion machinery, allowing you to reload at least three times faster than traditional corner packaging, significantly reducing loading time, jamming, and lost production time. Simply load and watch your efficiency and savings stack up!

Cable Shark Cable Hanging System

Our innovative, next-generation Cable Shark® Cable Hanging System is designed and engineered specifically to meet the unique demands and challenges of hanging commercial HVAC duct systems. With unparalleled safety, strength, and reliability, the Cable Shark mechanisms feature an advanced design that includes exclusive built-in load indicators and an easy-to-use load setter/adjustment tool. This helps ensure each system is properly engaged, providing added protection and peace of mind that you and your clients deserve.

A wide range of high-performance accessories are available to be used with the Cable Shark system for versatility on even the most challenging installations, featuring site kits, pivoting eyelets, bracket adapters, rectangular/round duct hanger brackets, studs, and a wide range of cut-to-length cable options with attachments and in 500’ and 1000’ spools.

TDC & TDF Components

We offer a variety of TDC® & TDF® components for transverse duct connector or transverse duct flange applications, including corners, cleat, and gasket.  Corners are available for both manual and machine insertion.

Turning Vane Systems

We offer various turning vane systems for directing airflow around elbows in duct systems, including noise-reducing acoustical turning vane for those systems that require quiet operating systems.

Time-Saving Tools & Accessories

Ductmate’s time‑saving tools and other duct accessories are engineered to make duct connections faster and more consistent to streamline alignment, compression, and fastening so you can stay productive in the shop and the field.

UPCOMING EVENTS

2026 Ductmate Distributor Training Classes

Registration for Ductmate’s 2026 Distributor Training classes is now open! Distributor Training classes are offered as a three-day experience that offers a blend of classroom learning and hands-on training at our corporate headquarters and main manufacturing facilities in Pennsylvania.  Whether you’re new to the HVAC industry or a seasoned pro looking for a refresher on our products, this class is the perfect opportunity to learn all there is to know about our products, gain hands-on experience, and see our facilities.

Classes will be hosted throughout the year on April 27-29, May 18-20, June 15-17, and September 14-16. Spots are limited and are reserved on a first-come, first-served basis.

Interested in attending? Click here to learn more.

NADCA Annual Meeting & Expo

March 23-25, 2026 | Colorado Springs, CO

NADCA’s 37th Annual Meeting & Expo will bring together industry professionals involved in the inspection, cleaning, and restoration of HVAC systems.

Attending the show? Be sure to stop by to see us at booth #413!

IKECA Annual Meeting & Expo

April 15-17, 2026 | Indianapolis, IN

IKECA’s Annual Membership Meeting & Expo brings together industry professionals involved in the commercial kitchen cleaning industry who are committed to fire prevention and life safety.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

Sign up for Ductmate’s e-Newsletter

Don’t miss our monthly e-newsletter!  Click here and sign up to receive exclusive Ductmate news and announcements, product information, promotions, industry news, and more, right in your inbox.

Connect With Us on Social Media

Follow Ductmate on our Facebook, Instagram, LinkedIn, and YouTube social media accounts to stay up-to-date with the latest news!

January 2026 Newsletter Recap: Solutions for Mega Project Excellence

Posted on by Ductmate Industries

Built to Last & Built to Lead: Solutions for Mega Project Excellence

Built to last and built to lead, Ductmate offers a variety of solutions for mega project excellence.

By choosing Ductmate, you’re not just meeting industry standards—you’re choosing maximum efficiency and reliability in the world’s most complex mega projects.

RELATED PRODUCTS

DM ‘35’ & ‘45’ Self-Sealing Rectangular Flange Connector Systems

The innovative DM ‘35’ and ‘45’ systems are designed for applications where strong, leak-free connections are critical.  Ideal for data centers, semiconductor plants, battery plants, wastewater treatment plants, chemical plants, oil rigs, stadiums and arenas, underground transit stations, and more.

Forget about struggling with traditional, labor-intensive methods for connecting heavy-duty ductwork. Backed by rigorous testing and our industry-leading guarantee, this superior solution not only saves you time, money, and effort but also ensures exceptional performance, making your operations more efficient and cost-effective.

The system features precision-engineered components for seamless assembly:

  • Roll-formed Flanges with Integral Mastic: Ensure a tight seal against the duct wall for a superior, leak-free connection. Integrated mastic eliminates the need for separate sealant applications, saving time and labor during assembly.
  • Corners: Reinforce the ductwork structure to hold everything together securely and provide a dedicated sealing surface for the gasket, further optimizing the system’s airtight integrity.
  • Gasket: Forms a vital barrier between the flanges to prevent air leaks and ensures optimal airflow within the duct system.
  • Cleats (Versa-Cleat or Bolt-On): Guarantee consistent compression and secure, efficient assembly, even on large duct spans.

With DM ‘35’ equal in strength to a SMACNA J-class and DM ‘45’ equal to a SMACNA K-class transverse joints, these systems provide the strength you need to connect the biggest duct imaginable without the labor-intensive fabrication processes of drilling bolt holes, welding frames, or applying rust-proof coatings. It’s no wonder that the DM ’35’ and ’45’ systems have become the clear choice over the labor-intensive companion angle.

Available in seven alloys (galvanized, galvanneal, aluminum (except cleat), aluminized, 304 stainless, 316 stainless, PVC-coated, and black iron), and with a variety of snap-on or bolt-on cleat, corner options, and more, the DM ‘35’ and ‘45’ systems are the ideal solution for your industrial and mega project problems.

PolyArmor Duct Liner Insulation

Ductmate’s PolyArmor™ polyester insulation is engineered to address the shortcomings of traditional insulation materials, offering a superior alternative with several compelling advantages:

  • Fiber-Free and Safe: PolyArmor eliminates fiber shedding and does not break down in the airstream, creating a cleaner and healthier indoor environment.   Its polyester material is soft and hypoallergenic, eliminating irritation during handling that you would typically experience with fiberglass insulation.
  • Superior Moisture Resistance: PolyArmor’s polyester construction provides exceptional resistance to moisture and condensation, minimizing the risk of mold growth.
  • Easy Installation: Designed for ease of installation, PolyArmor reduces labor costs and installation time, with its flexible nature allowing it to conform to any duct shape.
  • Enhanced Thermal Performance: PolyArmor provides industry-leading R-values/thermal resistance, contributing to increased energy efficiency and reduced system load.
  • Durability and Longevity: PolyArmor is engineered from strong and safe polyester that is webbed into a thermal blanket, which is then bonded with an extremely durable FSK-facing that reduces damage during fabrication, operation, and cleaning.
  • Environmental Benefits: Made with environmental sustainability in mind, PolyArmor is manufactured from 25% recycled content.

Access Doors

Sandwich Access Doors

Sandwich® Doors are solid, leak-proof access doors that are simple to install, providing easy access to ductwork.  Its unique sandwich-style design with knobs that are easily turned by hand allows for effortless opening and closing with no tools required, and no measuring needed, thanks to a provided self-adhesive template.

Sandwich Doors are available in both insulated and uninsulated options, as well as a wide variety of alloys. Additionally, single-pane and double-pane observation-style sandwich access doors are available to allow for viewing inside duct without door removal.

ULtimate Access Doors

The ULtimate Door™ provides easy access to high-temperature air ducts and grease duct systems, and is designed for applications requiring a UL 1978 listing.  Unlike shop-fabricated and inferior, light-gauge grease duct door substitutes, Ductmate’s high-performance ULtimate Doors are designed to meet the challenges. They are the most extensively engineered, tested, and ruggedly constructed doors available in the industry.

ULtimate Doors are grease and liquid-tight with minimal penetration into the duct, and are UL 1978-listed and meet NFPA 96 standards. Its sandwich-style design allows them to be completely removed or installed in minutes.  No frames to install, no holes to drill, and no clips needed, dramatically reducing field installation time and labor.  The ULtimate Door and ULtimate Door Round, and the weld-on style ULtimate Door II are available for when life safety and building performance are your top priority.

ULtimate Doors are available in custom sizes ranging from 6×6” to 24×24” in stainless steel 304 or black iron and with optional design features for virtually any configuration.  Consult Customer Service for more information.

Hangers

Pre-Punched Trapeze Duct Hanger

The Pre-Punched Trapeze Duct Hanger is a specialized duct support channel designed to support rectangular and oval ductwork. Made from 18-gauge galvanized steel and measuring 2″ high x 1.5″ wide, this lightweight and easy-to-cut product arrives at the job site in 20-foot lengths, pre-punched with oval holes at 2-inch intervals for immediate use.

Its versatile design eliminates the need for hard-to-cut and punch-angle iron, and it can be standardized to replace multiple hanger types, thereby potentially reducing inventory costs. The hanger’s neat, professional appearance is complemented by the option to insert heavy neoprene gaskets for sound isolation, and it can be secured to structural members up to 1.5 inches thick using its beam clamp.

Isolation Hanger Type SI

The Isolation Hanger Type SI is a sturdy, vibration-isolating steel hanging bracket featuring a rubber isolation pad, designed for use with threaded rods to suspend ductwork and other equipment, isolating vibration at its source.

Capable of supporting up to 1100 lbs (499 kg), the sturdy tension brackets have a much greater load-bearing capacity than the corresponding threaded rods.  Its styrene-butadiene rubber padding isolates vibration at its source, preventing distracting noise transmission and extending the lifespan of HVAC equipment by reducing wear and tear. The outside dimensions match standard wrench sizes, so no special tools are required, making installation easy. The open space of the bracket corresponds to the width of the nut, preventing it from turning.

Round Duct Hanger

Install your round ductwork quickly and effortlessly with our Round Duct Hanger. This prefabricated hanger features a ¼” x 20 carriage bolt with a zinc-plated wing nut and lock washer for secure, tool-free installation. Available in a range of sizes from 3” to 10” in 1” increments and 12” to 34” in 2” increments to perfectly fit your ductwork. Constructed from durable 20-gauge galvanized metal for long-lasting performance.

Round Duct Strap Bracket

Our versatile Round Duct Strap Bracket supports ductwork up to a generous 50” diameter. Designed to accommodate 1” wide strapping in gauges 18-22, it offers flexible installation options. Easily attach your preferred hanging system with compatibility for Cable Shark Hanger Adapters, 3/8” and 5/16” rods, or eyebolts. This bracket is a crucial component for secure and efficient ductwork suspension when used in conjunction with strapping and your chosen hanging method.

Hanger Strap

Our versatile Hanger Strap makes it easy to tackle hanging ductwork. Available in convenient boxes, bundles, or coils and in galvanized and stainless-steel options, this essential component is perfect for even the most challenging installations.

Vinyl Duct Strapping

Quickly and easily secure your flexible or lightweight ductwork with our Vinyl Duct Strapping. This strong, all-purpose fabric is perfect for small-scale installations, and its durable construction ensures reliable support for hanging your ductwork.

UPCOMING EVENTS

2026 Ductmate Distributor Training Classes

Registration for Ductmate’s 2026 Distributor Training classes is now open! Distributor Training classes are offered as a three-day experience that offers a blend of classroom learning and hands-on training at our corporate headquarters and main manufacturing facilities in Pennsylvania.  Whether you’re new to the HVAC industry or a seasoned pro looking for a refresher on our products, this class is the perfect opportunity to learn all there is to know about our products, gain hands-on experience, and see our facilities.

Classes will be hosted throughout the year on April 27-29, May 18-20, June 15-17, and September 14-16. Spots are limited and are reserved on a first-come, first-served basis.

Interested in attending? Click here to learn more.

2026 AHR Expo

February 2-4, 2026 | Las Vegas, NV

Don’t miss the biggest HVAC event of the year! Join us at booth #C4707 in the Central Hall at the 2026 AHR Expo.

Attending the show? Click here to add us to your show planner.

Ready to Buy?

Ductmate products are available at over 350 locations across the US as part of a selective distribution network.  Use the Ductmate distributor locator map to find a distributor near you.

Outside the US? Check out our international distributor list.  For detailed information on product availability, lead times, or other international sales requests, please email ductmate@ductmate.com.

Sign up for Ductmate’s e-Newsletter

Don’t miss our monthly e-newsletter!  Click here and sign up to receive exclusive Ductmate news and announcements, product information, promotions, industry news, and more, right in your inbox.

Connect With Us on Social Media

Follow Ductmate on our Facebook, Instagram, LinkedIn, and YouTube social media accounts to stay up-to-date with the latest news!