24" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder Coated actual front end outer dimensions

actual front end outer dimensions are approximately 42 5/8" width X 22 5/8" height -

the actual front end outer dimensions are 8" in diameter

to Ensure Perfect Smooth Finish

that will overlap at wall joint

24" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder Coated actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 11. 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