20" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w18h18 accordion-item { margin-bottom: 16px

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Plain Ends - Gives you the freedom to cut and flare at your own project needs

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+ Product Details Size – 8" x 20" or 20" x 8" is the size for the duct opening measurement only

75" width X 33

20" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w18h18 accordion-item { margin-bottom: 16px+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 19. 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