20" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille + Product Details Size –

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

+ Product Description Enhance your ventilation system with our high-quality grilles and registers

actual front end outer dimensions are approximately 34 5/8" width X 16 5/8" height

High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

+ Product Details Size - 34"w X 34"h is the size for the duct opening measurement only

20" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 14" OR 14" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 13. 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