Flexible Cold Air Return Duct

Sometimes the best route for a flexible duct run is up and over an obstruction.

Flexible cold air return duct.

In addition its flexibility allows for easier installation in hard to reach areas. This additional insulation provides greater thermal efficiency to save energy. Can be easily cut to size. The master flow 6 in.

Flexible return air kits are manufactured to meet the highest quality standards in strength permeability and fire resistance required in a flexible air duct. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Item 1790033 model 1790033. Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes.

This insulated etl class 1 air duct is fabricated with an acoustical liner which allows sound energy to penetrate the duct wall. Product is knocked down for shipping and must be assembled. This pulls the air across your body. Menards offers a wide range of ductwork pipe and fittings to help your ductwork systems run efficiently these products are used for warm air return supply and exhaust systems.

But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Used as a central return vent box filter grill not included.

If the supply ducts are high or in the ceiling then the return air ducts or grills should be low on a wall. 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. Item 1790033 model 1790033. Cold air returns be more comfortable.

If the supply ducts are in the floor then the return air should be located up high. To prevent problems use saddles or straps to support at regular intervals 4c 4d.