30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall Actual Filter Size – 7

Actual Filter Size – 7 3/4"w x 31 3/4" x 1"

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

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and centralized air ducted units

30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall Actual Filter Size – 7+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 6" OR 6" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 5. 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