10" x 8" or 8" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 10.5"] return filter actual front end outer dimensions

actual front end outer dimensions are 32" width X 10" height

but still very thin

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

Center Core is Removable for Easy Access and Maintence

Engineered with precision and designed to perfection

10" x 8" or 8" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 10.5"] return filter actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 8" or 8" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 75" x 7. 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 Made