22" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in actual front end outer dimensions

actual front end outer dimensions are approximately 12 5/8" width X 14 5/8" height

Actual Filter Size – 29 3/4"w x 19 3/4" x 1"

+ Product Details Size – 28"w X 26"h is the size for the duct opening measurement only

+ Product Details Size – 8"w X 12"h is the size for the duct opening measurement only

providing a stylish and practical solution for ventilation

22" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 20" OR 20" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 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