12" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 24 5/8"] Grilles + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

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

+ Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only

+ Product Details Size - 32"w X 25"h is the size for the duct opening measurement only

Actual Filter Size – 17 3/4"w x 15 3/4" x 1"

actual front end outer dimensions are approximately 24 5/8" width X 16 5/8" height

12" X 22" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 14 5 8" X 24 5 8"] Grilles + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 14"w X 30"h is the size for the duct opening measurement only + Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only