16" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 18 5/8" X 22 5/8"] w8h8 actual front end outer dimensions our copper coil is Color_Anodized Aluminum CRG2232

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height

Actual Filter Size – 19 3/4"w x 24 3/4" x 1"

With precise measurements for seamless integration

+ Product Details Size - 18"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 34"h is the size for the duct opening measurement only

16" X 20" Steel Return Air Filter Grille for 1" Filter Removable Frame Black [Outer Dimensions: 18 5 8" X 22 5 8"] w8h8 actual front end outer dimensions our copper coil is Color_Anodized Aluminum CRG2232 actual front end outer dimensions are approximately 16 5 8" width X 10 5 8" height Actual Filter Size – 19 3 4"w x 24 3 4" x 1"