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

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)

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

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

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

The 5 in. Steel Round Gas Vent Top helps prevent rain and debris from entering the vent. It is not designed to be used with wood-burning applications. This Type B fitting is made of galvanized steel and die-formed to assure uniform sizing for a strong, easy-to-connect joint. It is UL listed for safety in accordance with NFPA standards.

• Strong, durable galvanized steel
• Prevents rain and debris from entering the vent
• Not for use with wood-burning applications
• Locktab feature can be used instead of sheet-metal screws for ease of installation
• Die-formed to assure uniform sizing and strong, easy-to-connect joints
• Tested and listed per UL 441 for installation in single and multi-story buildings

The Master Flow 4 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 4 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 4 in. Round ducts
• Ideal for pitched roofs and being used for attic ventilation or to cover exhaust pipes extending through roofs
• 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 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)

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

This 4 in. galvanized steel work gear clamp can be used to attach ducts to other aluminum products such as elbows and pipe. It is ideal for use with semi-rigid or rigid aluminum ducts. Product weight is 0.1 lb.

• Made of heavy duty galvanized steel
• Easily adjustable using a hex or flat head screwdriver
• Can be adjusted from 3.75 in to 4.5 in
• Can be used in all venting applications

The Master Flow 12 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 4 in. x 3 in. Round Reducer is made of 26-Gauge, galvanized steel. It is used to transition from a 4 in. pipe to a 3 in. pipe in an HVAC system. It features hemmed collar edges for strength and a snug fit. This round reducer is suitable for most HVAC applications.

• Used to transition from a 4 in. pipe to a 3 in. pipe in an HVAC system
• 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)
• Hemmed collar edges for a snug fit and increased strength

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 5 in. x 36 in. Steel Round Gas Vent Pipe is made of durable galvanized steel. Each end is die-formed for uniform sizing and strong, easy-to-connect joints. A locktab feature allows the option of installation without using sheet-metal screws. This Type B round fitting is designed for use on approved gas appliances in residential, light commercial and industrial applications. It is tested and UL listed for safety in accordance with NFPA standards.

• Strong, durable galvanized steel
• Gas vent pipe for use on approved gas appliances
• 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
• Type B gas vent is also referred to as b vent or type b vent
• Some common applications may include warm air furnaces, tank water heaters, residential boilers, common vented appliances and more
• Used on gas-fired category I natural draft appliances

The 4 in. Steel Round Gas Vent Top is a Type B, galvanized-steel fitting that helps prevent rain and debris from entering the vent. It is not for use with wood-burning applications. The end is die-formed for uniform sizing and a strong, easy-to-connect joint. The cap is tested and UL listed for safety in accordance with NFPA standards.

• Strong, durable galvanized steel
• Prevents rain and debris from entering the vent
• Not to be used with wood-burning applications
• Tested and listed per UL 441 for installation in single and multi-story buildings

The 4 in. Steel Male Universal Gas Vent Adapter is a Type B round fitting designed for approved gas appliances in residential, light commercial and industrial applications. It is made of strong, durable galvanized steel. The ends are die-formed to assure uniform sizing for strong, easy-to-connect joints. A locktab feature offers the option of installation without sheet-metal screws. It is UL listed for safety in accordance with NFPA standards.

• Strong, durable galvanized steel outer pipe
• For use on approved gas appliances
• Locktab feature can be used instead of sheet-metal screws for ease of installation
• Ends are 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

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Adds 10.5 in. L to a 3 in. Dia installation
• Aluminum inner wall and galvalume outer wall construction that features an industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

These Saddle Air-Tite Take-Offs are used to transition from a round surface to 6 in. round pipe or 6 in. insulated flexible duct. Quality construction makes these take-offs easy to install and long-lasting. The Tacky gasket provides excellent seal.

• Always seal seams with code approved mastic or sealant (or duct tape)
• Install with sheet metal screws (not included)
• Always insulate ductwork for greater system efficiency and comfort

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Adds 58.5 in. L to a 4 in. Dia installation
• Aluminum inner wall and galvalume outer wall construction that features an industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and Liquified Propane (LP) category I appliances with a draft hood
• Allows 6 in. Dia DuraVent brand b-vent to be attached to the bottom of a different brand b-vent like Selkirk or MetalFab back to the appliance
• Aluminum inner wall and galvalume outer wall construction that features a industry leading twist-lock design
• Maintains UL listing for both brands of b-vent

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)

Master Flow 26-Gauge 90 Adjustable 8 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)

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 28-Gauge, galvanized steel construction
• Always seal seams with building code approved sealant or duct tape
• Always insulate ductwork for greater system efficiency and comfort