This is a professionally designed supply ductwork installation kit for the BM18MCD and BM24MCDconcealed duct (multi room) air handler. With the exception of the supply plenum itself this kit includes all of the materials needed to successfully install the BM18MCD or BM24MCD supply ductwork. This kit has been designed specifically for the BM18MCD or BM24MCD to deliver an optimal perfomance level and help to simplify the installation. It is designed to supply air for up to 3 rooms. It is highly recommended that you select one of the matching return duct installation kits as well and the supply and return air plenum KIT-BPK18 or KIT-BPK24. This kits is designed to be used with a ductboard plenum such as KIT-BPK18 or KIT-BPK24. This kit is not compatible with a sheet metal plenum. It includes:

x3 25 feet of inch R8, metalized flex duct
x3 8 inch ductboard take off collars with dampers
x3 8x8 3 way ceiling diffuser 
Cable Ties
Gallon of Duct Sealant"