Supply & Return Plenum Kit w/ Box & Filter Rack, 21"

The trim-to-fit knockdown plenum fully assembled measures 20 in. W x 20 in. D x 36 in. H. and is designed for use with 21" wide furnaces. The knock-down design of the plenum takes up very little space and simplifies transporting to the job site. Simply measure and cut to size using tin snips to match the supply opening of the air handler, furnace, or evaporator coil. This knockdown plenum is designed to be used with multiple different brands and comes with 4 trimmable side and 1 trimmable top.

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This return air box features a 20" x 25" x 1" filter rack and measures 21" wide, 28" deep, and 18" tall.

No Return Policy

All sales of this product are final and are non-refundable.