22" x 26" or 26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper please note that the total

please note that the total outer dimensions of the grille measure 8" in diameter

+ Product Description Introducing HVAC Premium's Aluminum Adjustable Return Grill – the key to enhanced air control and energy efficiency

Tough reinforced metallized polyester jacket - tear and puncture resistant

These are airflow control components made to connect to supply grilles of the drop ceiling

Actual Filter Size – 25 3/4"w x 25 3/4" x 1"

22" x 26" or 26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades with Damper please note that the total+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 26" OR 26" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 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