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

+ Product Details Size - 12"w X 10"h is the size for the duct opening measurement only

With precise measurements and easy installation

+ Product Details Size – 10" x 16" or 16" x 10" is the size for the duct opening measurement only

+ Product Details Size – 14"w X 36"h is the size for the duct opening measurement only

Key Features:

24" X 12" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 26 5 8" X 14 5 8"] Filter Grille + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 12"w X 10"h is the size for the duct opening measurement only With precise measurements and easy installation