24" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return filter Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 8" X 4" duct openings

High Quality Aluminum – The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant

also referred to as T-Bar or Lay-in system

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24" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return filter Ideal for Walls & Ceilings:+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 26" OR 26" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 25. 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