Plenums & Return Air Boots - Ductwork - Sheetmetal

Plenums & Return Air Boots - Ductwork - Sheetmetal return air support box with filter slot Southwark SBF30 return air support box for 24 x 8 duct with filter slot for 20 x 25 filter, accommodates 1, 4 or 5 thick filters, 26 gauge galvanized tin return air support box with filter slot Snappy™ SBF30 Return Air Support Box with Filter Drawer, 30x28x15 in D, Steel, Galvanized

return air support box with filter slot I've also sorted a housing for the stale air return that holds a 16x25x1 filter so I can pull the restrictive exchanger filters on both supply

return air box with filter slot a return air box : this is just a big sheet metal box that you set slot to hold the air filter a supply air plenum to handle the Southwark SBF30 return air support box for 24 x 8 duct with filter slot for 20 x 25 filter, accommodates 1, 4 or 5 thick filters, 26 gauge galvanized tin