20" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w6h6 Efficient Airflow Design: The slots

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

actual front end outer dimensions are approximately 34 5/8" width X 22 5/8" height

actual front end outer dimensions are approximately 18 5/8" width X 36 5/8" height

+ Product Description This aluminum flex duct is intended to be used in heating

20" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w6h6 Efficient Airflow Design: The slots+ 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