24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 10in If your duct opening is

If your duct opening is 14 inches in diameter

+Why Hvac Premium HVAC Premium has been providing superior quality service for many years

installation is a breeze

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 10in If your duct opening is+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 8" OR 8" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 7. 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