22" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper + Product Details Size -

+ Product Details Size - 30"w X 22"h is the size for the duct opening measurement only

With precise measurements for seamless integration

+ Product Details Size - 14"w X 8"h is the size for the duct opening measurement only

High Quality – High quality ABS plastic will never rust

22" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 8" OR 8" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 7. 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