Reinforced Design: Features upgraded concave inward pressure ribs and a 0.6mm thickened structure, ensuring durability and stability. High-Quality Material: Crafted from galvanized steel for the body and flaps, with an aluminum axis and carbon steel spring for long-lasting use. Smart Airflow Control: Lightweight valve wings open under airflow pressure and close automatically with the spring action, supported by a rubber ring for quiet and secure operation. Versatile Applications: Suitable for use in HVAC systems, range hoods, bathroom fans, and kitchen ventilation. Compatible with both flexible and rigid ducts. Effortless Installation: Install the spring horizontally for optimal function in horizontal duct setups. Easy to fit into existing ventilation systems.
