6" x 12" or 6" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 14.5"] 10" Diameter Can be hooked up with

Can be hooked up with our "Butterfly Dampers" for precise airflow control

For 6" Round Duct Opening - Spiral or Flex

+ Product Description Upgrade your HVAC system with our 8" Round Air Vent Supply Grille

Design – Circular air supply valves - designed to be used in low and medium pressure ventilation air conditioning systems

6" x 12" or 6" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 14.5"] 10" Diameter Can be hooked up with+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 12" or 12" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 11. 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 Made