8" x 30" or 30" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 32.5"] Brown + Product Details Size –

+ Product Details Size – 12"w X 10"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 34" or 34" x 10" duct opening (measured at the opening)

allowing you to choose the best option to suit your airflow needs

enhancing the entire room with its elegant presence

actual front end outer dimensions are approximately 28 5/8" width X 14 5/8" height

8" x 30" or 30" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 32.5"] Brown + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 30" or 30" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 75" x 29. 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