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

+ Product Details Size - 4"w X 22"h is the size for the duct opening measurement only

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior durability and reliable performance

Crafted with a solid steel body

actual front end outer dimensions are approximately 30 5/8" width X 34 5/8" height

5" - SEE BELOW IN DESCRIPTION How To Measure A Grille

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