24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter RG66 Black-HP But they are also the

But they are also the most visible representation of you air system

Screws Included

powder-coated steel

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 8" duct opening (measured at the opening)

If your hole is 14" wide by 20" tall

24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter RG66 Black-HP But they are also the+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 9. 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