28" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 8in All year round solution -

All year round solution - Get the hot air out during the Summer Months

Close For Winter To Prevent The Cold

actual front end outer dimensions are 7" diameter

with actual outer dimensions of 38

28" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 8in All year round solution -+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 8" OR 8" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 5. 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