This is a professionally designed return ductwork installation kit for the BM24MCD (24000 btu) and BM36MCD (36000 btu) concealed duct (multi room) air handler. With the exception of the return plenum itself this kit includes all of the materials needed to successfully install the BM24MCD or BM36MCD return ductwork. This kit has been designed specifically to deliver an optimal performance level and help to simplify the installation. It uses two 14 inch return ducts to optimize air mixture in your space and simplify the return air installation. It is highly recommended that you select one of the matching supply duct installation kits as well and the supply and return air plenum KIT-BPK24 (24000 btu) or KIT-BPK36 (36000 btu). This kits is designed to be used with a ductboard plenum such as KIT-BPK24 or KIT-BPK36. This kit is not compatible with a sheet metal plenum. It includes:

x2 25 feet of 14 inch R8 metalized flex ducts
x2 1 inch ductboard takeoff collars (no damper)
x2 14.5 x 25.5 x 14(round connection) non insulated ceiling boxes
x2 14 x 25 x 1 ceiling filter grilles
x1 Foil Tape