24" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 26 5/8" X 18 5/8"] w32h32 Actual Filter Size – 17

Actual Filter Size – 17 3/4"w x 11 3/4" x 1"

Actual Filter Size – 29 3/4"w x 5 3/4" x 1"

Mounted with frame and bayonet joint which are included

Round-neck-to-square-face construction results in 360 degree air diffusion pattern similar to a full round diffuser

Actual Filter Size – 21 3/4"w x 25 3/4" x 1"

24" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 26 5/8" X 18 5/8"] w32h32 Actual Filter Size – 17+ 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.