28" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 10 5/8"] w12h12 + Product Details Size -

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 15 3/4"w x 21 3/4" x 1"

+ Product Details Size – 8"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 20"w X 6"h is the size for the duct opening measurement only

28" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 10 5/8"] w12h12 + Product Details Size -+ Product Details Size 28"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 30 5 8" width X 10 5 8" height Actual Filter Size 27 3 4"w x 7 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 & ceiling Design Removable frame for easy filter change & cleaning uses a 1" thick filter. Our filter