20" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Adjustable Return + Product Details Size –

+ Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only

[Outer Dimensions: 12

ensuring that you find the perfect fit for your ventilation needs

Pre-flared ends with nuts are for simple and easy installation

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20" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Adjustable Return + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 30" OR 30" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 29. 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