1.Specifications / structure 1). Material: made of stainless steel by stretching forming, attractive appearance, no rust, 2). Bearing: wholel sealing bearing, which can ensure it operates smoothly and constantly. 3). Special central shaft design, high-class lubricating bearing system: preventing turbine blades Rotating at high speed from deformation, and extending the service life. 4). Inside support frame: cast iron. 2.Advantages 1). Automatically running. Wind drive. One time investment, no anymore cost. 2). No operating cost, no electricity consumption, environmental protection, energy-saving. 7. Why should you consider a no power roof turbine ventilators? The ventilator is very quiet and the rotating action provides employees with visual knowledge that the unit is operating.
