28" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 32 5/8"] Compatible with Duct 6" actual front end outer dimensions CRFG2028 Width_14in 4 X 12 Is

actual front end outer dimensions are approximately 23 5/8" width X 7 5/8" height

Actual Filter Size – 33 3/4"w x 35 3/4" x 1"

Powder-Coat Finish – Smooth

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

and scratch-resistant surface that enhances the aesthetics of any room

28" X 30" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 30 5 8" X 32 5 8"] Compatible with Duct 6" actual front end outer dimensions CRFG2028 Width_14in 4 X 12 Is actual front end outer dimensions are approximately 23 5 8" width X 7 5 8" height Actual Filter Size – 33 3 4"w x 35 3 4" x 1"