8" x 22" or 22" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 24.5"] Aluminum Bar angle the louvers up for 4 X 12 Is CRFG2028 Width_14in

angle the louvers up for efficient cooling

+ Product Details Size – 12"w X 26"h is the size for the duct opening measurement only

it ensures long-lasting performance in both residential and commercial settings

Durable Construction – Made from high-quality

+ Product Details Size - 32"w X 20"h is the size for the duct opening measurement only

8" x 22" or 22" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum White [Outer Dimensions: 10.5" X 24.5"] Aluminum Bar angle the louvers up for 4 X 12 Is CRFG2028 Width_14in angle the louvers up for efficient cooling + Product Details Size – 12"w X 26"h is the size for the duct opening measurement only