
Durable Industrial Ventilation Tunnel Fan for Optimal Performance. Customizable Impeller Material: Impeller available in Iron, Stainless Steel, Mn-Steel, Cuprum, or Customized options. High Power Efficiency: Power 2x185KW with 85% efficiency for optimal industrial ventilation performance. Multi-Color Customization: Color options include Red, White, Grey, Yellow, Blue, or fully customized to your needs. Dual Direction Operation: Bidirectional jet fan switches to rated speed in forward/reverse directions within 30 seconds. Noise Reduction Capability: Muffler can be added to reduce noise for occasions with high noise requirements. Rigorous Quality Testing: All blowers run for over 3 hours before delivery to ensure quality and reliability. Wide Application Scope: Suitable for mines, tunnels, water conservancy, highways, railways, and subway projects. Durable Construction: Shell formed by imported rotary flanging machine with refined inner wall for corrosion resistance.