16" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 30 5/8"] w34h34 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 32 5/8" width X 36 5/8" height

+ Product Details Size – 25"w X 10"h is the size for the duct opening measurement only

Design – Removable frame for easy filter change & cleaning - uses a 1" thick filter

actual front end outer dimensions are approximately 20 5/8" width X 8 5/8" height

High Quality – High-quality aluminum with counter-sunk screw holes (screws included) and no sharp edges

16" X 28" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 18 5 8" X 30 5 8"] w34h34 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 32 5 8" width X 36 5 8" height + Product Details Size – 25"w X 10"h is the size for the duct opening measurement only