24" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 26 5/8" X 14 5/8"] Color_White + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 20"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 23 3/4" x 1"

Crafted from solid stamped steel

This versatile solution enhances air supply and adds a touch of class to your space

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

24" X 12" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 26 5 8" X 14 5 8"] Color_White + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 20"w X 36"h is the size for the duct opening measurement only Actual Filter Size – 35 3 4"w x 23 3 4" x 1"