Flexible Duct For Return Air

10 or 8 will starve the unit and cause it to freeze up which will.

Flexible duct for return air.

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. 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. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.

All ducts should be sealed using ul 181 rated duct mastic 1 and flexible ducts should be held in place with. Use only what you need. This pulls the air across your body. 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. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications. Free call from tim carter about your ducts click or tap here. The master flow 6 in.

The other answers are right go to the the hardware store and get a bag of flex duct. 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. Seal the ducts with mastic. If the supply ducts are high or in the ceiling then the return air ducts or grills should be low on a wall.

Item 1790033 model 1790033. Cut through both layers with a razor knife and then the inner tube wire with some dikes or linesman pliers. Cold air returns be more comfortable. This insulated etl class 1 air duct is fabricated with an acoustical liner which allows sound energy to penetrate the duct wall.

Plus the knock down design simplifies transporting to the job by taking up very little space.