20" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated Ideal for VAV systems

Ideal for VAV systems

+ Product Details Size - 22"w X 6"h is the size for the duct opening measurement only

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10"w X 3"h Is The Size For The Duct Opening Measurement Only

20" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated Ideal for VAV systems+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 18" OR 18" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 20. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 17. 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