12" X 32" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 34 5/8"] w20h20 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 38 5/8" width X 22 5/8" height -

3 * Insulation density is 30kgs/CBM = 0

+ Product Details Size - 28"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 42 5/8" height

+ Product Details Size – 10" x 14" or 14" x 10" is the size for the duct opening measurement only

12" X 32" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 14 5 8" X 34 5 8"] w20h20 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 38 5 8" width X 22 5 8" height 3 * Insulation density is 30kgs CBM = 0