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

This Aluminum Pipe can be used to vent most types of heating units including gas and electric clothes dryers. This product features an easy to close snap lock system. It's composed of a non-combustible, all aluminum construction.

• 4 in. of diameter x 24 in. L
• Made of 0.012 in. aluminum
• Used for transition ducting, not for in wall use
• For correct and approved installation practices always consult your local building codes

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

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 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 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

This all aluminum elbow has a 4-piece construction and can be adjusted up to 90 to use at various angles. It can be used in many general-purpose applications including the venting of most types of heating units. The aluminum elbow has 1-crimped end and 1-straight end.

• 4-piece all aluminum construction
• Used to vent most types of heating units
• Fully adjustable to 90
• 1 crimped end allows for easy installation

The Master Flow 6 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 6 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 6 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)

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)

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

Master Flow Metal Pipe is available in a variety of common lengths, diameters and gauges to help make your next HVAC project a success. Round 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 pipe creates a quick and secure installation that you can rely on.

• Crimped end for a secure interlocking fit
• Galvanized steel construction
• Always seal seams with building code approved sealant or duct tape
• Can be cut to needed length with tin snips
• Always insulate ductwork for greater system efficiency and comfort

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 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

The 4 in. x 6 ft. Heavy Duty Semi-Rigid Aluminum Duct with Collars is ideal when all aluminum duct is required x code in some gas and electric dryer applications. It can also be used for bathroom fan venting. This duct is totally noncombustible and has a maximum operating temperature of 435 degree F.

• Aluminum collars on both ends of the duct swivel making for easy attachment to the dryer exhaust port and exterior exhaust hood
• UL2158A listed and marked for safe dryer venting
• New manufacturing technology incorporated into the duct allows for easy rotation and therefore more durable handling of the duct by the contractor
• UL duct is thicker than the standard non-UL semi-rigid version that allows for a more robust installation

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

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

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 10 in. to 8 in. x 8 in. Wye is made of 30-Gauge, galvanized steel. The joint is used to transition from 1 pipe to 2 pipes in a heating and air conditioning application. It can be installed with sheet metal screws (not included). The wye has a maximum temperature rating of 390 degree F.

• Designed to transition from 1-pipe to 2-pipes in a heating and air conditioning application
• Install 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 Master Flow Air-Tite 6 in. Take-Off 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. It can be installed with sheet metal screws (sold separately) and 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 create a secure, airtight seal
• Seal seams with code-approved mastic, sealant or duct tape (sold separately)

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 10 in. x 8 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 10 in. pipe to a 8 in. pipe in an HVAC system. It is suitable for most HVAC applications.

• Hemmed collar edges for an improved fit and increased strength
• Connects 10 in. pipe to 8 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)
• Hemmed collar edges to provide strength and a snug fit

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

Double Wall Construction

• Non-Positional Locking System Makes Installation A Snap
• No Tools Required For Disassembly

The Master Flow 4 in. x 4 in. x 4 in. Wyes are made of 30-Gauge, galvanized steel. They are used primarily to transition from 1 pipe to 2 pipes in heating and air conditioning applications. They are easily installed with sheet metal screws (not included). The joints have a maximum temperature rating of 390F.

• Used primarily to transition from 1-pipe to 2-pipes in heating and air conditioning applications
• Can be installed with sheet metal screws (not included)
• Maximum temperature rating of 390F
• Always insulate ductwork for greater system efficiency and comfort
• Seal seams with code-approved mastic, sealant or duct tape (not included)