Flex Duct For Return Air

But if its a return air duct that last answer is wrong if its the only return air run into the unit you need at least a 12 duct.

Flex duct for return air.

This additional insulation provides greater thermal efficiency to save energy. Flex ducts can be used for heating ventilating and air conditioning systems in both residential and commercial applications. Used as a central return vent box filter grill not included. For most systems the minimum duct size see table 1 is sufficient for up to 25 feet 8 m with no more than three 90 bends.

Item 1790033 model 1790033. Most technicians are skeptical about these numbers especially on the return air side of the system. If the supply ducts are in the floor then the return air should be located up high. Cut through both layers with a razor knife and then the inner tube wire with some dikes or linesman pliers.

Duct size single return as for any duct size is dependent on duct length air flow and allowable static pressure drop. Can be easily cut to size. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications. Can accept any size collar up to 18 in.

The other answers are right go to the the hardware store and get a bag of flex duct. The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. 10 or 8 will starve the unit and cause it to freeze up which will. Supply air from furnaces and air conditioners should be on outside walls.

The master flow 4 in. The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product. The duct board return air box is an r6 the duct board return air box is an r6 insulated box that installs traditionally in a ceiling. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.

They are light weight fully insulated and easy to install. These flexible duct products are designed to remain mold and mildew free throughout their lifespan. Product is knocked down for shipping and must be assembled. All ducts whether rigid or flexible should be sealed with ul 181 rated duct mastic.

Our website offers a variety of residential flex ducts air connectors and sleeves manufactured by hart cooley. Duct tape has many uses but sealing ducts isn t one of them.