20" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling actual front end outer dimensions

actual front end outer dimensions are 19" Width X 13" Height

+ Product Details Size – 20"w X 18"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 16" or 16" x 8" duct opening (measured at the opening)

Outer Dimensions Are 17

actual front end outer dimensions are approximately 14 5/8" width X 34 5/8" height

20" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 22" OR 22" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 21. 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