Description: Air Ventilators are fabricated. Principle: the air ventilator utilises wind energy to induce airflow by centrifugal action. Centrifugal force is created by rotating vanes which in turn creates a low-pressure zone, which draws fresh air from outside, thus replacing polluted air/hot air continuously. Minimum wind pressure will spin the ventilator and even after the wind has stopped, the flywheel effect of the ventilator will use its stored energy to rotate & to maintain fresh airflow. Material of construction: available in aluminium and stainless steel. Powder coating and anodising can be done on request. The air ventilator is ideally suited for industrial sheds, factories, hospitals, restaurants, and hotels.