22" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 30 5/8"] w30h30 + Product Details Size -

+ Product Details Size - The listed 8" diameter refers specifically to the size of the duct opening

+ Product Details Size - 24"w X 2"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 34"h is the size for the duct opening measurement only

9% Pure Copper meeting ASTM B280 standards

1/2” - 3119 PSI

22" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 30 5/8"] w30h30 + Product Details Size -+ Product Details Size 22"w X 28"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 24 5 8" width X 30 5 8" height Actual Filter Size 21 3 4"w x 27 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 & ceiling Design Removable frame for easy filter change & cleaning uses a 1" thick filter. Our