26" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8" Diameter The integral design allows you

The integral design allows you to easily adjust the curved blades

and brown – to harmonize with your interior theme

this grille seamlessly drops into the designated place

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 36" OR 36" X 16" duct opening (measured at the opening)

26" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8" Diameter The integral design allows you+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 18" OR 18" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 20. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 17. 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