20" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 18 5/8"] w6h6 actual front end outer dimensions

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

actual front end outer dimensions are approximately 27 5/8" width X 12 5/8" height

actual front end outer dimensions are approximately 9

customize cuts and flares as needed

actual front end outer dimensions are approximately 23 5/8" width X 7 5/8" height

20" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 18 5/8"] w6h6 actual front end outer dimensions+ Product Details Size 20"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 18 5 8" height Actual Filter Size 19 3 4"w x 15 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.