18" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 20 5/8" X 26 5/8"] Ceiling 3/4" - 2981 PSI

3/4" - 2981 PSI

Actual Filter Size – 11 3/4"w x 9 3/4" x 1"

Design – removable door/face for easy filter change & cleaning - uses a 1" thick filter

+ Product Details Size – 6"w X 10"h is the size for the duct opening measurement only

18" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 20 5/8" X 26 5/8"] Ceiling 3/4" - 2981 PSI+ Product Details Size 18"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 26 5 8" height Actual Filter Size 17 3 4"w x 23 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.