28" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil + Product Details Size -

+ Product Details Size - 32"w X 25"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 19 3/4" x 1"

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

+ Product Details Size – 22"w X 12"h is the size for the duct opening measurement only

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

28" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 6" OR 6" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 5. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum Made