24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 28 5/8" width X 12 5/8" height

Designed with individually adjustable curved blades

actual front end outer dimensions are approximately 20 5/8" width X 24 5/8" height

+ Product Details Size - 14"w X 12"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 16" or 16" x 8" duct opening (measured at the opening)

24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter actual front end outer dimensions+ 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