Flexible Duct For Return Air

The flexible design allows for connection of a new or existing side air return on either side based on the placement of the reinforced sheet metal panel of the return air box assembly.

Flexible duct for return air.

The master flow 6 in. 10 or 8 will starve the unit and cause it to freeze up which will. 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. Cold air returns be more comfortable.

The other answers are right go to the the hardware store and get a bag of flex duct. Use only what you need. Item 1790033 model 1790033. If the supply ducts are high or in the ceiling then the return air ducts or grills should be low on a wall.

Seal the ducts with mastic. Plus the knock down design simplifies transporting to the job by taking up very little space. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Flexible return air kits are manufactured to meet the highest quality standards in strength permeability and fire resistance required in a flexible air duct.

This pulls the air across your body. 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. Duct size single return as for any duct size is dependent on duct length air flow and allowable static pressure drop. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications.

4 rules for flexible ducts that remodelers need to know. All ducts should be sealed using ul 181 rated duct mastic 1 and flexible ducts should be held in place with. This additional insulation provides greater thermal efficiency to save energy. The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product.

If the supply ducts are in the floor then the return air should be located up high.