12" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 14 5/8" X 26 5/8"] w28h28 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 22 5/8" width X 28 5/8" height

the actual front end outer dimensions are 7" in diameter

Our innovative adjustable design changes the game

+ Product Details Size – 16"w X 32"h is the size for the duct opening measurement only

For 10" duct opening

12" X 24" Steel Return Air Filter Grille for 1" Filter Removable Frame * Filter Included * [Outer Dimensions: 14 5 8" X 26 5 8"] w28h28 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 22 5 8" width X 28 5 8" height the actual front end outer dimensions are 7" in diameter