Description

1 Patented Design: Internal and external cover use radiation surface reinforcement design, elegant appearance, reduce vibration and noise, improve the heat dissipation performance.
2 H**-H**0 frame size, all series have oil hole and oil drainage hole, inner oil seal, IP*5 protection degree design.
3 Ambient temperature of **0 degree, the reliable operation is 1 hour, the ambient temperature of **0 degree, reliable operation are 2 hours.
4 Widely used in tunnels, hotels, high-rise apartments and other places as ventilation and smoke exhaust device.