22" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel The integral design allows you

The integral design allows you to easily adjust the curved blades

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 24" OR 24" x 18" duct opening (measured at the opening)

Filter Size - 19

+ Product Details Size - 10"w X 12"h is the size for the duct opening measurement only

+ Product Description This aluminum flex duct is intended to be used in heating

22" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel The integral design allows you+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 6" OR 6" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 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