6" x 14" or 14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 16.5"] 8" Diameter 75" Width X 13

75" Width X 13

We carry sizes the big box stores don't

+ Product Details Size - 24"w X 6"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 21 3/4" x 1"

6" x 14" or 14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 16.5"] 8" Diameter 75" Width X 13+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 14" or 14" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 13. 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