30" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown with actual front end outer

with actual front end outer dimensions of 10"

durability

Ideal for Walls & Ceilings: Designed for seamless installation in standard 8" X 4" duct openings

modern Victorian

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 12" OR 12" x 30" duct opening (measured at the opening)

30" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown with actual front end outer+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 20" OR 20" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 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