Low Noise Jet Fan

chinacoal05 Product Introduction low noise jet fan tunnel fan, carpark ventilation fan, wall fan SDS-Jet Tunnel Ventilation Fan for Construction SDS jet flow fans is specially used for the tunnel lengthways ventilation system, the fans is installed hanging on the top roof of tunnel or both sides, which do not effect the traffic, noneed to build exhaust way. Low cost building , is very ideal ventilation fans. Main Parameter Main Parameter Model Motor Poles Rotating Speed r/min