32" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter White + Product Details Size -

+ Product Details Size - 20"w X 2"h is the size for the duct opening measurement only

Easy clean Healthy air flow for your HVAC system - noise free components

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening)

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32" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter White + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 28" OR 28" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 27. 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