6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 22.5"] Compatible with Duct 6" actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height

Actual Front End Outer Dimensions Are 12" Width X 6" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

our Radial Damper simplifies the process of managing airflow

+ Product Description When it's time to upgrade your HVAC Vents in your house

6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 22.5"] Compatible with Duct 6" actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 20" or 20" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 19. 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