24" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6in diameter 75" width X 19

75" width X 19

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 28" OR 28" x 18" duct opening (measured at the opening)

12"w X 2"h Is The Size For The Duct Opening Measurement Only

actual front end outer dimensions are approximately 10 5/8" width X 20 5/8" height

24" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6in diameter 75" width X 19+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 30" OR 30" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 29. 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