12" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 10 5/8"] w10h10 excluding the old vent cover

excluding the old vent cover

+ Product Details Size - 36"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 14 5/8" height

12" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 10 5/8"] w10h10 excluding the old vent cover+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 10 5 8" height Actual Filter Size 11 3 4"w x 7 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille