8" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 10 5/8" X 14 5/8"] Material_Steel preventDefault() Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

preventDefault()

+ Product Details Size - 30"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 25"w X 25"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 4"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 4"h is the size for the duct opening measurement only

8" X 12" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 10 5 8" X 14 5 8"] Material_Steel preventDefault() Compatible With Duct 7in Applications This sheet metal DDAG A 1212 preventDefault() + Product Details Size 30"w X 28"h is the size for the duct opening measurement only