20" X 40" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 42 5/8"] w24h24 + Product Details Size -

+ Product Details Size - 25"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 12" X 4" is the size for the duct opening (floor/vent hole) measurement only

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20" X 40" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 42 5/8"] w24h24 + Product Details Size -+ Product Details Size 20"w X 40"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 42 5 8" height. High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Ceiling Design Fixed hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and