10" x 22" or 22" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 24.5"] Powder-Coated 75" width X 27

75" width X 27

+ Product Details Size – 26" x 36" or 36" x 26" is the size for the duct opening measurement only

+ Product Details Durable Construction - Made with clear

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are 7" diameter

10" x 22" or 22" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 24.5"] Powder-Coated 75" width X 27+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 22" or 22" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 75" x 21. 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