14" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 8 5/8"] w20h20 + Product Details Size -

+ Product Details Size - 25"w X 25"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 14 5/8" height -

+ Product Details Size – 14" X 4" is the size for the duct opening (floor/vent hole) measurement only

+ Product Details Size – 30"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 29

14" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 8 5/8"] w20h20 + Product Details Size -+ Product Details Size 14"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 8 5 8" height Actual Filter Size 13 3 4"w x 5 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