12" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 14 5/8" X 22 5/8"] white actual front end outer dimensions

actual front end outer dimensions are approximately 12 5/8" width X 38 5/8" height

Actual Filter Size – 23 3/4"w x 27 3/4" x 1"

actual front end outer dimensions are approximately 32 5/8" width X 10 5/8" height -

our Circular Air Supply Valves are ideal for low and medium pressure ventilation air conditioning systems

12" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 14 5/8" X 22 5/8"] white actual front end outer dimensions+ Product Details Size 12"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 22 5 8" height Actual Filter Size 11 3 4"w x 19 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.