12" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 10 5/8"] Color_Black + Product Details Size -

+ Product Details Size - 14"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 41

actual front end outer dimensions are approximately 16 5/8" width X 18 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 30" OR 30" x 20" duct opening (measured at the opening)

12" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 10 5/8"] Color_Black + Product Details Size -+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 10 5 8" height Actual Filter Size 11 3 4"w x 7 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 grille