32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated Actual Filter Size – 15

Actual Filter Size – 15 3/4"w x 17 3/4" x 1"

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Filter Size - 35

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 4" duct openings

32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coated Actual Filter Size – 15+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 10" OR 10" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 9. 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