These optimal quality Roof Ventilators are attached with a turbine, which helps these to use wind energy for starting the air flow. Furthermore, our product makes use of centrifugal action for creating a low pressure area by the winds, which is mainly the cause of the spinning action. Thereafter, the turbine releases the air and replaces it from the fresh air outside. Even at the slightest breeze, this turbine can rotate removing the air with the help of fly wheel effect of the rotor cage.