In addition its flexibility allows for easier installation in hard to reach areas.
Flexible cold air return duct.
Used as a central return vent box filter grill not included.
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.
Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes.
The master flow 6 in.
Cold air returns be more comfortable.
Item 1790033 model 1790033.
This additional insulation provides greater thermal efficiency to save energy.
Sometimes the best route for a flexible duct run is up and over an obstruction.
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This pulls the air across your body.
Can accept any size collar up to 18 in.
Product is knocked down for shipping and must be assembled.
Flexible return air kits are manufactured to meet the highest quality standards in strength permeability and fire resistance required in a flexible air duct.
Item 1790033 model 1790033.
This insulated etl class 1 air duct is fabricated with an acoustical liner which allows sound energy to penetrate the duct wall.
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.
Can be easily cut to size.
Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.
To prevent problems use saddles or straps to support at regular intervals 4c 4d.
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.