36" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8in diameter + Product Details Size -

+ Product Details Size - 24"w X 14"h is the size for the duct opening measurement only

Its generous size and universal design ensure a perfect fit for a wide range of thermostat models

Key Features:

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Actual Filter Size – 13 3/4"w x 21 3/4" x 1"

36" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8in diameter + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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 Made from