Upflow Installation Kit, 21"

This return air package features the return air plenum with 1" filter rack and ships knocked down in one carton. The package includes a starting collar, 2 30" duct sections, return air plenum, and 1" filter rack. The filter rack is located right above the return's elbow. The return duct size is 25" x 10".

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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