Side Outlet Ceiling Diffuser Box | 12" X 12" X 8" | Galvanized Steel Metal Box Is Compatible With Duct 8" Compatible with Duct 8" + Product Details Size – LO246 Product Details Size 32 Compatible with Duct 4"

+ Product Details Size – 20"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 29"w X 22"h is the size for the duct opening measurement only

It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire

Actual Filter Size – 15 3/4"w x 27 3/4" x 1"

Side Outlet Ceiling Diffuser Box 12" X 12" X 8" Galvanized Steel Metal Box Is Compatible With Duct 8" Compatible with Duct 8" + Product Details Size – LO246 Product Details Size 32 Compatible with Duct 4" + Product Details Size – 20"w X 24"h is the size for the duct opening measurement only + Product Details Size – 29"w X 22"h is the size for the duct opening measurement only