20" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w6h6 actual front end outer dimensions

actual front end outer dimensions are 13

Efficient Airflow Design: The slots are meticulously angled to diversify airflow in two directions

+ Product Spec Sheet Return Air Grille Spec Sheet

High Quality – No sharp surface edges

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

20" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w6h6 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