16" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 18 5/8" X 22 5/8"] Width_20in + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 20" duct opening (measured at the opening)

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

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

+ Product Details Size - 18"w X 22"h is the size for the duct opening measurement only

ensuring even air distribution throughout your space

16" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 18 5/8" X 22 5/8"] Width_20in + Product Details Perfect Fit+ Product Details Size 16"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 22 5 8" height Actual Filter Size 15 3 4"w x 19 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 and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.