16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter + Product Description Introducing the

+ Product Description Introducing the 3-coned supply grille for a T-bar lay-in

High quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 20" OR 20" X 16" duct opening (measured at the opening)

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16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter + Product Description Introducing the+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 36" OR 36" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 35. 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