32" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 34 5/8" X 18 5/8"] Material_Aluminum actual front end outer dimensions CRFG2028 Width_14in 4 X 12 Is

actual front end outer dimensions are approximately 20 5/8" width X 14 5/8" height -

Actual Filter Size – 13 3/4"w x 15 3/4" x 1"

+ Product Details Size – 12"w X 4"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 8 5/8" height -

actual front end outer dimensions are approximately 29

32" X 16" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 34 5 8" X 18 5 8"] Material_Aluminum actual front end outer dimensions CRFG2028 Width_14in 4 X 12 Is actual front end outer dimensions are approximately 20 5 8" width X 14 5 8" height Actual Filter Size – 13 3 4"w x 15 3 4" x 1"