24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 10" actual front end outer dimensions

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

Actual Filter Size – 7 3/4"w x 27 3/4" x 1"

Filter Size - 5

75" width X 21

actual front end outer dimensions are approximately 18 5/8" width X 27 5/8" height

24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 10" actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 9. 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