22" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 20 5/8"] w20h20 + Product Details Size -

+ Product Details Size - 32"w X 25"h is the size for the duct opening measurement only

+ Product Details Size – 28"w X 28"h is the size for the duct opening measurement only

9% Pure Copper meeting ASTM B280 standards

+ Product Details Size – 2"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 12 5/8" height -

22" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 20 5/8"] w20h20 + Product Details Size -+ Product Details Size 22"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 24 5 8" width X 20 5 8" height Actual Filter Size 21 3 4"w x 17 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on