Ducting & Venting
Heavy Gauge 4 in. Pipe is used to vent boilers, furnaces and hot water heaters. Available in a variety of common lengths, diameters and gauges to help make your next HVAC project a success. A simple snap lock design and sturdy galvanized steel construction combine for a quick and secure installation that you can rely on.
- Easy-to-install snap lock design
- Crimped end with a stop-bead for a secure interlocking fit
- Sturdy 26-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
Master Flow 26-Gauge 90 Adjustable 4 in. Elbow is used to make turns in runs of round pipe and flexible duct through 90. It has a sturdy galvanized steel construction and is simple to adjust. It is also crimped on 1 end to easily fit into a pipe or other fitting of the same diameter. Ships in 90 position.
- Used to make angular or gradual turns in runs of pipe
- Adjustable to any angle through 90
- 26-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape (not included)
- Always insulate ductwork for greater system efficiency and comfort (not included)
Master Flow Drive Cleats and S Cleats are used to join sections of rectangular duct and stack duct in. HVAC systems. These cleats are sleeves of galvanize steel that help to securely assemble the top and bottom (S) and left and right sides (Drive) of rectangular duct runs. S cleats are used to connect the long side of the duct, while Drive cleats are used to connect the short side.
- Always seal seams with code approved mastic or sealant (or duct tape)
- Always insulate ductwork for greater system efficiency and comfort
- S cleats secure bare edges of rectangular duct
- Insulate ductwork to promote system efficiency
Master Flow standard 90 degree Adjustable 6 in. Elbow is used to make turns in runs of round pipe and flexible duct through 90 degree . It has a sturdy galvanized steel construction and is simple to adjust. It is also crimped on 1 end to easily fit into a pipe or other fitting of the same diameter. Ships in 90 degree position.
- Used to make angular or gradual turns in runs of pipe
- Adjustable to any angle through 90 degree
- 30-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape (not included)
- Always insulate ductwork for greater system efficiency and comfort (not included)
The Master Flow 8 in. Starting Collar is suitable for most HVAC applications. It provides a transition from a flat surface like a plenum (made from metal, ductboard or insulated) to round pipe or insulated flexible duct. It can be used with ductboard, an internally lined or unlined plenum. This galvanized steel starting collar features extra-long tabs to fit most duct board thicknesses.
- Install with sheet metal screws (not included)
- Fits most HVAC types for universal application
- Can be used with an internally lined or unlined plenum
- Extra-long tabs to fit most ductboard thicknesses through 1-1/2 in. (or R-6 value)
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
The 3 in. x 8 ft. Semi-Rigid Aluminum Duct is ideal for bathroom fan venting. This duct is totally noncombustible. It has a maximum operating temperature of 435 degree F.
- Maximum durability for robust installation
- All aluminum products are fire resistant
- Semi-rigid product holds its shape to help improve airflow
- 3 in. Dia and stretches to 8 ft. L
Master Flow 26-Gauge 90Adjustable 3 in. Elbow is used to make turns in runs of round pipe and flexible duct through 90. It has a sturdy galvanized steel construction and is simple to adjust. It is also crimped on 1 end to easily fit into a pipe or other fitting of the same diameter. Ships in 90 position.
- Used to make angular or gradual turns in runs of pipe
- Adjustable to any angle through 90
- 26-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape (not included)
- Always insulate ductwork for greater system efficiency and comfort (not included)
This 4 in. x 25 ft. Dryer Vent Duct is ideal for both gas and electric dryer application. It is constructed of heavy-duty, fire resistant, 4-ply aluminum foil laminate that encapsulates a high density, corrosion resistant wire helix. This forms an air tight and easy to use air duct.
- Constructed of heavy-duty, fire resistant, aluminum foil laminate
- Constructed with a corrosion resistant, wire helix
- Duct is airtight
- Will not support combustion
- Note: per UL2158A only ducts 8 feet or less can be UL marked
The Master Flow Air-Tite 8 in. Take-Off is suitable for most HVAC applications. It provides an airtight seal from a flat surface to an insulated flexible duct or round pipe. This take-off can be used to redirect air from any side of the plenum or to transition from a rectangular pipe run. It can be installed using sheet metal screws (sold separately). It is suitable for most HVAC applications.
- Can be used to route air from any side of the plenum or to transition from a rectangular pipe run
- Install with sheet metal screws (not included)
- Fits most HVAC types for universal application
- Tacky gasket helps to create a secure, airtight seal
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
This Dryer Vent Duct is ideal for both gas and electric dryer applications. This duct is UL2158A listed and marked for safe dryer venting. It is constructed of heavy duty, fire resistant, aluminum foil laminate.
- Duct will not support combustion
- Constructed with a high density, corrosion resistant, wire helix
- Duct is air tight
- Note: per UL2158A only ducts 8 ft. or less can bear the UL label
- Note: per UL2158A only ducts 8 or less can be UL marked
Dundas Jafine's 4 in. aluminum tension clamps are ideal for use with flexible or semi-rigid ducts. These clamps open and close with pressure. No tool required.
- Ideal for use with flexible or semi-rigid ducts
- Aluminum construction
- No tools necessary
- Easy operation
The Master Flow 4 in. x 3 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 4 in. pipe to a 3 in. pipe in an HVAC system. It is suitable for most HVAC applications.
- Hemmed collar edges for an improved fit and increased strength
- Connects 4 in. pipe to 3 in. pipe in duct run
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
- Always insulate ductwork for greater system efficiency and comfort (insulation not included)
Duct strapping is ideal for use in hanging hot air supply and cold air returns to framing members. Founded in 1971, Diversitech Corporation is North Americas largest manufacturer of equipment pads and a leading manufacturer and supplier of components and related products for multiple industries, including: HVACR, electrical, consumer hardware retail, electrical utility, automotive retail and pool and spa channel. Diversitechs mission for its wholesaler partners is to simplify their work. We do this by offering more than 200 product categories all from a single manufacturing/supplier source to create product availability and supply chain cost advantages for our customers in every market we serve. We also leverage best-in-class customer service to react quickly and professionally to every customer request.
- Galvanized steel construction resists corrosion
- Solid strapping, easy to drill or nail
- Can accept fasteners at any point along the length of the strapping
- Convenient cardboard dispenser allows for easy transport
Master Flow Standard 90Adjustable 4 in. Elbow is used to make turns in runs of round pipe and flexible duct through 90. It has a sturdy galvanized steel construction and is simple to adjust. It is also crimped on 1 end to easily fit into a pipe or other fitting of the same diameter. Ships in 90position.
- Used to make angular or gradual turns in runs of pipe
- Adjustable to any angle through 90
- 30-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape (not included)
- Always insulate ductwork for greater system efficiency and comfort (not included)
Master Flow Fresh Air Vents come with a built-in screen to prevent bird entry. They can be used to vent a combustion system or anywhere fresh air intake is needed. Constructed of galvanized steel.
- Sturdy galvanized steel construction
- Always seal seams with building code approved sealant or duct tape
- Install with sheet metal screws
- Built-in screen to prevent bird entry
- Maximum temperature rating of 390 degree F, minimum temperature rating of-100 degree F
Master Flow Drive Cleats and S Cleats are used to join sections of rectangular duct and stack duct in. HVAC systems, these cleats are sleeves of galvanize steel that help to securely assemble the top and bottom (S) and left and right sides (Drive) of rectangular duct runs. S cleats are used to connect the long side of the duct, while Drive cleats are used to connect the short side.
- Always seal seams with code approved mastic or sealant (or duct tape)
- Always insulate ductwork for greater system efficiency and comfort
- Can be hammered in place
- Insulate ductwork to promote system efficiency
This 4 in. aluminum duct connector attaches 2-pieces of 4 in. flexible duct together. It is ideal for use as both a duct connector and extending the exhaust collar of your clothes dryer. Product length is 6 in.
- All aluminum construction
- Includes 1-straight end and 1-crimped end for ease of installation
- Can be used with all types of flexible ducts
- Can be used in both gas and electric dryer applications
The Master Flow Air-Tite 10 in. Take-Off can be installed with sheet metal screws (sold separately). It provides an airtight seal when connecting insulated flexible duct or round pipe to a flat surface. This take-off can be used to redirect air from any side of the plenum or to transition from a rectangular pipe run.
- Can be used to route air from any side of the plenum or to transition from a rectangular pipe run
- Install with sheet metal screws (not included)
- Fits most HVAC types for universal application
- Tacky gasket helps to create a secure, airtight seal
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
Double Wall Construction
- Non-Positional Locking System Makes Installation A Snap
- No Tools Required For Disassembly
The Master Flow 6 in. Goose Neck Vent in Black can be used to cover exhaust pipes extending through your roof or for attic ventilation. This vent is designed to be used on 6 in. round ducts. It's made of zinc-coated galvanized steel for durability and reliability. This vent features a heavy-duty screen which helps protect against small animals from entering your home through the vent. The black finish helps this vent blend into your home's rooftop.
- Designed for 6 in. round ducts
- Ideal for pitched roofs and being used for attic ventilation or to cover exhaust pipes extending through roof
- Seal seams with code approved mastic, sealant or duct tape
- Install using appropriate roofing nails (not included)
- Heavy-duty screen helps protect against small animals from entering
- Ample flashing for added leak protection
- Black finish helps blend into rooftops
- Always seal flashing with approved roof sealant
Master Flow Beaded Metal Pipe is available to help make your next HVAC project a success. Beaded pipe can be used as a main trunk line or branch line, as well as in return air situations. It maintains the most efficient characteristics for airflow and is common throughout the country. A simple snap lock design and sturdy galvanized steel construction on Master Flow beaded pipe creates a quick and secure installation that you can rely on.
- Beaded for strength
- Easy-to-install snap lock design
- Crimped end for a secure interlocking fit
- Can be cut to needed length with tin snips
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
The 4 in. x 8 ft. Heavy-duty Semi-Rigid Aluminum Duct is UL2158A listed and marked for safe dryer venting. It is ideal when UL all aluminum duct is required by code in some gas and electric dryer applications. This duct is totally noncombustible and has a maximum operating temperature of 435 degree F.
- New manufacturing technology incorporated into the duct allows for easy rotation and therefore more durable handling of the duct by the contractor
- Semi-rigid product holds its shape to help improve airflow
- UL duct is thicker than the standard non-UL semi-rigid version
- All aluminum products are fire resistant
Master Flow Beaded Metal Pipe is available to help make your next HVAC project a success. Beaded pipe can be used as a main trunk line or branch line, as well as in return air situations. It maintains the most efficient characteristics for airflow and is common throughout the country. A simple snap lock design and sturdy galvanized steel construction on Master Flow beaded pipe creates a quick and secure installation that you can rely on.
- Beaded for strength
- Easy-to-install snap lock design
- Crimped end for a secure interlocking fit
- Can be cut to needed length with tin snips
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
Master Flow Heavy Gauge Pipe is used to vent boilers, furnaces and hot water heaters. Master Flow metal pipe is available in a variety of common lengths, diameters and gauges to help make your next HVAC project a success. A simple snap lock design and sturdy galvanized steel construction combine for a quick and secure installation that you can rely on.
- Crimped end with a stop-bead for a secure interlocking fit
- Sturdy 26-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
Double Wall Construction
- Non-Positional Locking System Makes Installation A Snap
- No Tools Required For Disassembly
- Compatible with All Brands
Master Flow 16 in. x 35 in. Galvanized Panning is used to seal the underside of a joist space. This panning is constructed with sturdy 30-Gauge galvanized steel. It can be cut to size to suit a variety of applications.
- Seals the underside of a joist space
- 16 in. width is equal to the distance of joist spacing, which enables the panning to be nailed or screwed directly into the wood
- Can be cut to size to fit a variety of applications
- Use as a run of duct, usually to channel air back through the return air system
- Install with sheet metal screws (not included)
The Master Flow 4 in. x 24 in. Round Pipe is made from aluminum for strength. The snap lock design makes installation easy, and the pipe should be installed using sheet metal screws for durability. The pipe features a convenient design that can be cut to any length using tin snips. The pipe's seams should be sealed after installation with building code approved mastic, sealant or duct tape for efficient operation.
- Made from aluminum for strength
- Snap lock design makes installation easy
- Should be installed using sheet metal screws for durability
- Convenient design can be cut to any length using tin snips
- Seams should be sealed after installation with building code approved mastic, sealant or duct tape for efficient operation
The Master Flow 6 in. Diameter Starting Collar is crimped for easy installation. This starting collar can be used to transition from a flat surface such as an unlined metal plenum to round metal pipe. Can also be attached to most unlined metal ductwork, such as rectangular duct. Constructed of galvanized steel, this starting collar is made for durability.
- Fits most 6 in. metal pipe
- Helps transition from unlined metal duct to round pipe
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
The Master Flow 6 in. Starting Collar is suitable for most HVAC applications. It provides a transition from a flat surface like a plenum (made from metal or lined duct) to round pipe or insulated flexible duct. A Damper can be added to this model if needed.
- Connects round pipe or insulated flexible duct to a flat surface to start a duct run
- Fits most HVAC types for universal application
- Can be used with an internally lined or unlined plenum
- Extra-long tabs to fit most duct board thicknesses through 1-1/2 in. (or R-6 value)
Master Flow Beaded Metal Pipe is available to help make your next HVAC project a success. Beaded pipe can be used as a main trunk line or branch line, as well as in return air situations. It maintains the most efficient characteristics for airflow and is common throughout the country. A simple snap lock design and sturdy galvanized steel construction on Master Flow beaded pipe creates a quick and secure installation that you can rely on.
- Beaded for strength
- Easy-to-install snap lock design
- Crimped end for a secure interlocking fit
- Can be cut to needed length with tin snips
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
Heavy Gauge 3 in. Pipe is used to vent boilers, furnaces and hot water heaters. Available in a variety of common lengths, diameters and gauges to help make your next HVAC project a success. A simple snap lock design and sturdy galvanized steel construction combine for a quick and secure installation that you can rely on.
- Easy-to-install snap lock design
- Crimped end with a stop-bead for a secure interlocking fit
- Sturdy 26-Gauge, galvanized steel construction
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
This Master Flow 10 in. x 6 in. to 6 in. Diameter Universal Register Box creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grille. It can be installed with sheet metal screws. It is suitable for most HVAC applications. This universal register box is made of galvanized steel.
- Creates a straight, in-line transition from round pipe or insulated flexible duct to an air register or grille
- Installs with sheet-metal screws
- Insulate ductwork for system efficiency and comfort
- Seal seams with code-approved mastic, sealant or duct tape (not included)
The Master Flow 8 in. to 6 in. x 6 in. Wye is made of 30-Gauge, galvanized steel. It is designed to transition from 1 pipe to 2 pipes for heating and air conditioning applications. The wye is easily installed with sheet metal screws (not included). It has a maximum temperature rating of 390 degree F.
- Designed to transition from 1-pipe to 2-pipes in heating and air conditioning applications
- Easily installed with sheet metal screws (not included)
- Maximum temperature rating of 390 degrees Fahrenheit
- Always insulate ductwork for greater system efficiency and comfort
- Seal seams with code-approved mastic, sealant or duct tape (not included)
The 5 in. Steel 90 degree Adjustable Gas Vent Elbow is ideal when you need an offset around rafters, joists and other construction obstacles. It has a strong, durable, galvanized-steel outer pipe and internal spacing bends to assure a uniform insulating air space between pipe walls. Each end is die-formed to assure uniform sizing for strong, easy-to-connect joints. A locktab feature offers the option of installation without sheet-metal screws. This Type B fitting is UL listed for safety in accordance with NFPA standards.
- Strong, durable galvanized steel outer pipe
- Use to create an offset around rafters, joists and other construction obstacles
- Locktab feature can be used instead of sheet-metal screws for ease of installation
- Each end is die-formed to assure uniform sizing for strong, easy-to-connect joints
- Tested and listed per UL 441 for installation in single and multi-story buildings
- Internal spacing bends create a uniform insulating air space between pipe walls
Drive Cleats and "S" Cleats are used to join sections of rectangular duct and stack duct in. HVAC systems. These cleats are sleeves of galvanize steel that help to securely assemble the top and bottom ( "S") and left and right sides (Drive) of rectangular duct runs. "S" cleats are used to connect the long side of the duct, while Drive cleats are used to connect the short side.
- Galvanized steel construction
- Always seal seams with code approved mastic or sealant (or duct tape)
- Always insulate ductwork for greater system efficiency and comfort
- "S" cleats secure bare edges of rectangular duct
- Insulate ductwork to promote system efficiency
Double Wall Construction
- Non-Positional Locking System Makes Installation A Snap
- No Tools Required For Disassembly
The Master Flow 6 in. Round Duct Cap, also called a tee-cap or clean-out plug, is constructed of galvanized steel for durability. The duct cap is used to terminate or block off a rectangular duct run in HVAC systems. It can be installed with sheet metal screws (sold separately) and is suitable for most HVAC applications.
- Use to cap off a round or rectangular duct run
- Install with sheet metal screws (not included)
- Fits most HVAC types for universal application
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
Master Flow Beaded Metal Pipe is available to help make your next HVAC project a success. Beaded pipe can be used as a main trunk line or branch line, as well as in return air situations. It maintains the most efficient characteristics for airflow and is common throughout the country. A simple snap lock design and sturdy galvanized steel construction on Master Flow beaded pipe creates a quick and secure installation that you can rely on.
- Beaded for strength
- Easy-to-install snap lock design
- Crimped end for a secure interlocking fit
- Can be cut to needed length with tin snips
- Always seal seams with building code approved sealant or duct tape
- Always insulate ductwork for greater system efficiency and comfort
The Wide Mouth Dryer Vent Kit includes a 4 in. wide mouth exhaust hood, 4 in. x 8 ft. dryer transition duct and 2 plastic adjustable clamps. The exhaust hood features a robust, wide mouth cap for optimum airflow and snug fit back draft damper that prevents cold air, snow or rain from entering the home. Additional features of the hood include a removable pest screen that helps to keep pests out and allows for easy cleaning of the duct.
- Dryer transition duct in this kit is UL 2158A listed and marked for safe dryer venting
- "Snap on" pipe to cap assembly eliminates the need for lint trapping staples
- UV resistant coating on the cap helps to prevent the cap from discoloring
- Cap is paintable to match the exterior of your home
- Cap has a UV resistant coating to prevent the cap from discoloring and is paintable to match the exterior of your home
- Hoods can be used in conjunction with brick, concrete or siding
Double Wall Construction
- Non-Positional Locking System Makes Installation A Snap
- No Tools Required For Disassembly
Master Flow 4 in. Aluminum Elbow makes venting a boiler, furnace or hot water heater a snap, installing on an angle up to 90 via a crimped-end design that makes it easy to affix. The elbow fits roundest aluminum pipes with 4 in. Dia Ideal for use in high-heat applications. Ships in 90 position.
- Durable aluminum construction
- Designed to fit round piping so that you can vent boilers, furnaces and hot water heaters on an angle
- Light-weight, crimped-end design installs easily and provides a secure fit
- Seam seal using building code approved sealant or duct tape for a quick and easy finishing touch
- Fits most round aluminum pipes with 4 in. Dia
- Adjustable design allows use at angles up to 90
- For reliability in high-heat applications
The Master Flow 4 in. Diameter Starting Collar is crimped for easy installation. This starting collar can be used to transition from a flat surface such as an unlined metal plenum to round metal pipe. Can also be attached to most unlined metal ductwork, such as rectangular duct. Constructed of galvanized steel, this starting collar is made for durability.
- Made of galvanized steel
- Fits most 4 in. metal pipe
- Helps transition from unlined metal duct to round pipe
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
The Master Flow 14 in. x 6 in. x 8 in. Universal Register Box creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grille. It can be installed with sheet metal screws. It is suitable for most HVAC applications. This universal register box is made of galvanized steel.
- Creates a straight (in-line) transition from 8 in. round pipe or insulated flexible duct to a 14 in. x 6 in. air register or grille
- Install with sheet metal screws (not included)
- Always seal seams with building code-approved sealant or duct tape (not included)
- Always insulate ductwork for greater system efficiency and comfort (insulation not included)
The Master Flow 8 in. Starting Collar is suitable for most HVAC applications. It provides a transition from a flat surface like a plenum (made from metal or lined duct) to round pipe or insulated flexible duct. A Damper can be added to this model if needed.
- Connects round pipe or insulated flexible duct to a flat surface to start a duct run
- Fits most HVAC types for universal application
- Can be used with an internally lined or unlined plenum
- Extra-long tabs to fit most duct board thicknesses through 1-1/2 in. (or R-6 value)
The Master Flow 5 in. x 4 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 5 in. pipe to a 4 in. pipe in an HVAC system. It is suitable for most HVAC applications.
- Hemmed collar edges for an improved fit and increased strength
- Connects 5 in. pipe to 4 in. pipe in duct run
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
- Always insulate ductwork for greater system efficiency and comfort (insulation not included)
- Maximum temperature rating of 390F, minimum temperature rating of -100F
These Worm Clamps are ideal for attaching aluminum ducts to other aluminum products, including elbows and pipe. Easily adjustable with the turn of a screwdriver, these clamps can be used with all venting applications. A heavy-duty galvanized steel construction ensures longevity through a variety of uses. For optimal performance, it is recommended to use a manual screwdriver to avoid over tightening and stripping the screw.
- Made of heavy duty galvanized steel
- Easily adjustable using a hex or flat head screwdriver
- Adjusts from 5-1/8 in. to 6-1/2 in.
- Can be used in all venting applications
The Master Flow 4 in. Round Duct Cap, also called a tee-cap or clean-out plug, is constructed of galvanized steel for durability. The duct cap is used to terminate or block off a rectangular duct run in HVAC systems. It can be installed with sheet metal screws (sold separately) and is suitable for most HVAC applications.
- Use to cap off a round or rectangular duct run
- Install with sheet metal screws (not included)
- Fits most HVAC types for universal application
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)
The Duct to Duct Increaser connects 3 in. to 4 in. ducts together. It is ideal for bathroom fan exhaust applications. Finished in black color. The increaser is designed to be a tight fit to reduce air leaks in the connections. When using the increaser with a 3 in or 4 in snap pipe (aluminum or galvanized) , it may be necessary to unsnap the receiving end of the pipe, then insert the increaser and snap the pipe back together.
- Made of polypropylene
- Used when your exhaust port or exhaust hood needs to be increased from 3 in. to accommodate a 4 in. duct
- Consult your local building codes for approved installation practices
- Light weight design