34" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 24 5/8"] Ceiling and waste gases transmission lines

and waste gases transmission lines

+ Product Details Size - 12"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 24 5/8" height

actual front end outer dimensions are approximately 12 5/8" width X 36 5/8" height

actual front end outer dimensions are approximately 20 5/8" width X 30 5/8" height

34" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 24 5/8"] Ceiling and waste gases transmission lines+ Product Details Size 34"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 24 5 8" height Actual Filter Size 33 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 Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.