28" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 actual front end outer dimensions

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 20" duct opening (measured at the opening)

1/4” - 6518 PSI

provide precise damper control and superior air dispersion

Installation Location – Suitable for both sidewall and ceiling installation

28" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 26" OR 26" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 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