6" x 28" or 28" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 30.5"] Aluminum actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height -

+ Product Details Size - 6" X 6" is the size for the duct opening measurement only

+ Product Details Size - 10"w X 10"h X 2"d (for duct opening measurement only)

High Quality Aluminum – The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant

6" x 28" or 28" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 30.5"] Aluminum actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 28" or 28" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 27. 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