24" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 4" duct openings

baffles and plaster frames available

+ Product Details Size – 14" x 32" or 32" x 14" is the size for the duct opening measurement only

This versatile guard features air circulating ports on all four sides to allow proper airflow

24" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 20" OR 20" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 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