12" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 24 5/8"] Material_Steel + Product Details Size –

+ Product Details Size – 40"w X 20"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 9 3/4" x 1"

+ Product Details Size - 34"w X 6"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 26 5/8" height

12" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 24 5/8"] Material_Steel + Product Details Size –+ Product Details Size 12"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 24 5 8" height Actual Filter Size 11 3 4"w x 21 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