Profile: Raj Roofing And Interiors is a manufacturer of turbine air ventilators. Our turbine air ventilators utilize wind energy to induce air flow by centrifugal action. Centrifugal force created by the rotating vanes creates a low pressure zone which draws fresh air from outside, thus replacing the polluted/hot air continuously. Our ventilators are made of aluminum and stainless steel. They are used in factories, hospitals, restaurants and ware houses. They are provided with dust preventive bearings, which are made of stainless steel.