18" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White Actual Filter Size – 17

Actual Filter Size – 17 3/4"w x 5 3/4" x 1"

Superior Airflow Control: Built-in damper lets you control how much air enters your room

14" Diameter Is The Size For The Duct Opening Measurement Only

will change the appearance of the entire room

75" height

18" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White Actual Filter Size – 17+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 6" OR 6" X 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 75" x 5. 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