
Galvanized AC 220V Fd Round Motorized Fire Dampers for Ventilation. Fire Safety & Containment: Automatically closes during high temperature or fire to prevent flame and smoke spread. Corrosion Resistant Materials: Constructed from galvanized steel and Stainless Steel 304L/316L for durability. Global Safety Certifications: Certified with ISO9001, CE, IAF, CNAS, and CAS for international compliance. Flexible Control Options: Available in manual or motorized control modes for diverse project needs. Wide Size Range: Sizes from 150x150mm to 2500x2100mm with customizable flanges. Low Leakage Design: Features double skin blades and low leakage bearing assembly options. Integrated Manufacturer: Established in 2011 with 3 production lines and global reach to 50+ countries. Full Customization: Supports custom shapes, controls, and materials to meet specific requirements.