
High-Efficiency 400mm External Rotor Axial Fan for Cooling. High Efficiency Design: Features large air volume, low noise, low vibration, and reliable operation for long life. Wide Application Range: Suitable for computer systems, medical equipment, welding machines, and photovoltaic industries. Robust Construction: Metal single flange cylinder shell with steel plate blades and AC asynchronous motor. Comprehensive Certifications: Certified by RoHS, ISO, CE, CCC, and SGS for safety and quality compliance. Flexible Customization: Customizable voltage, vibration, power, bearing, humidity, and rotation speed options. Strict Quality Control: 100% inspection of finished products before delivery with performance tests during R&D. Extended Warranty: 24-month warranty period covering performance and reliability for peace of mind. Fast Sample Delivery: Sample orders typically delivered within one week for testing before bulk purchases.