20" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White description-text { font-family: Roboto

description-text { font-family: Roboto

+ How To Measure A Grille

Our coils have a a very high PSI burst pressure

excluding the old vent cover

20" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White description-text { font-family: Roboto+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 19. 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 from