10" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 38 5/8"] Ceiling + Product Details Size -

+ Product Details Size - 4"w X 26"h is the size for the duct opening measurement only

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

Actual Filter Size – 7 3/4"w x 19 3/4" x 1"

+ Product Details Size - 34"w X 10"h is the size for the duct opening measurement only

Installation Location – Sidewall and ceiling

10" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 38 5/8"] Ceiling + Product Details Size -+ Product Details Size 10"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 12 5 8" width X 38 5 8" height Actual Filter Size 9 3 4"w x 35 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