20" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Black actual front end outer dimensions

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 22" OR 22" X 16" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 14" or 14" x 12" duct opening (measured at the opening)

Traditional HVAC systems were designed for cold air

Actual Filter Size – 11 3/4"w x 19 3/4" x 1"

20" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Black actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 6" OR 6" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 5. 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