24" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return filter + Product Details Size –

+ Product Details Size – 10"w X 4"h is the size for the duct opening measurement only

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

14"w X 3"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 4"w X 10"h is the size for the duct opening measurement only

3/8" - 4223 PSI

24" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return filter + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 26" OR 26" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 25. 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