10" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 36 5/8"] w18h18 + Product Details Size -

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

Whether you're restoring an old Victorian or craftsman style home

+ Product Details Size – 36"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 12" X 2" is the size for the duct opening (floor/vent hole) measurement only

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

10" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 36 5/8"] w18h18 + Product Details Size -+ Product Details Size 10"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 12 5 8" width X 36 5 8" height Actual Filter Size 9 3 4"w x 33 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