20" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles this grille offers a seamless

this grille offers a seamless blend of functionality and aesthetics

actual front end outer dimensions are approximately 22 5/8" width X 27 5/8" height

the T-Bar vent covers

actual front end outer dimensions are approximately 22 5/8" width X 34 5/8" height -

20" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles this grille offers a seamless+ 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