Flex Duct For Return Air

Used as a central return vent box filter grill not included.

Flex duct for return air.

Product is knocked down for shipping and must be assembled. Most technicians are skeptical about these numbers especially on the return air side of the system. Can be easily cut to size. Duct tape has many uses but sealing ducts isn t one of them.

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. 10 or 8 will starve the unit and cause it to freeze up which will. When ducts are located outside the conditioned space they should be sealed to prevent loss of conditioned air and also insulated to prevent thermal loss or gain from the ambient air.

They are light weight fully insulated and easy to install. 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. The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. For instance a 2 5 ton system approximately 400 cfm per ton would require 2 14 flexible return ducts or 1 very short flexible 18 duct to move the 1000 cfm required by the 2 5 ton system.

This pulls the air across your body. The master flow 4 in. The other answers are right go to the the hardware store and get a bag of flex duct. Supply air from furnaces and air conditioners should be on outside walls.

Item 1790033 model 1790033. These flexible duct products are designed to remain mold and mildew free throughout their lifespan. Duct size single return as for any duct size is dependent on duct length air flow and allowable static pressure drop. 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 ducts can be used for heating ventilating and air conditioning systems in both residential and commercial applications. Our website offers a variety of residential flex ducts air connectors and sleeves manufactured by hart cooley. Cut through both layers with a razor knife and then the inner tube wire with some dikes or linesman pliers. 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.

If the supply ducts are in the floor then the return air should be located up high. The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product.