20" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 36" OR 36" x 26" duct opening (measured at the opening)

Pressure Rating: 2100 to 7000 PSI

actual front end outer dimensions are approximately 10 5/8" width X 18 5/8" height

actual front end outer dimensions are approximately 22 5/8" width X 38 5/8" height

20" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 10" OR 10" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 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