30 x 20 in. Return Air Box Plenum for Grille

This 30 x 20 in. return air box forms a plenum behind a compatible return grille.

• Nominal face size: 30 x 20 in.
• For a ceiling or floor return installation
• Pair with a suitable start collar and return filter frame as needed

Confirm grille size, plenum depth and duct takeoff location before ordering; accessories are not assumed included.

Free Shipping to Continental US

Sheet metal will come in 30 gauge or better. If you need a specific gauge, please call to place your order. Sheet metal is designed for rough in ductwork and is not made for applications where aesthetic standards are required. Inside may have duct sealant that is not applied by a machine and may look messy. The main function of the sealant is to seal air.
Special Shipping note: Ductwork takes up a lot of space and some of it doesn't stack easily so larger orders will be packed into several boxes. Shipping will be charged accordingly.