26" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Filter Grille + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 26" OR 26" x 24" duct opening (measured at the opening)

875" width X 18" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening)

High Quality – High-quality rust-free

actual front end outer dimensions are approximately 34 5/8" width X 22 5/8" height

26" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Filter Grille + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 10" OR 10" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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