Light weight portable blower adopts the die cast aluminum alloy blades with gradual twisted airfoil cross section. It features high wind flow and wind pressure. Electrical voltage available in 110V, 220V and 380V, with 50/60 Hz. Blower end can easily fitted on with flexible hose. It is suitable for air extractor or fresh air supply, for locations such as underground, warehouse, tunnel, marine cabin, ship, lab, etc...