20" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Black Design – Unrestricted airflow For

Design – Unrestricted airflow For Your HVAC system - noise free components - no vibrating louvers etc

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+ Product Details Size - 32"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 10"h is the size for the duct opening measurement only

20" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Black Design – Unrestricted airflow For+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 16" OR 16" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 15. 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