24" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Bar background: #f8f9fb

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Do not measure the overall size of the register itself

Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%

You may think of grilles and registers as a generic component of the ventilation system in your house

24" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Bar background: #f8f9fb+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 23. 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