24" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 26 5/8" X 18 5/8"] w36h36 it ensures long-lasting durability

it ensures long-lasting durability

+ Product Details Size - 4"w X 26"h is the size for the duct opening measurement only

The grille comes with all necessary screws for a secure fit

75" width X 37

24" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 26 5/8" X 18 5/8"] w36h36 it ensures long-lasting durability+ Product Details Size 24"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 26 5 8" width X 18 5 8" height Actual Filter Size 23 3 4"w x 15 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.