6" x 24" or 24" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 26.5"] Insulated Line + Product Details Size -

+ Product Details Size - 22"w X 26"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 30 5/8" height

transparent design that complements any setting

+ Product Details Size - 14"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 32 5/8" height

6" x 24" or 24" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 26.5"] Insulated Line + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 24" or 24" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 23. 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