The vane of an air power ventilator is made entirely of high-grade aluminum, including the rivets, making it extremely resistant to atmospheric corrosion. Its movement is controlled by natural wind movement and hot air flow (Thermos Syphoning), therefore there is no need for electricity to operate it. In order to produce a sturdy blade with high aerodynamic properties, the vane's are contoured and rolled. Due to its minimal weight and ability to operate in extremely low wind speeds, air power ventilators. There are no ongoing electricity costs because no power is required for its functioning. Rainwater is kept out of the ventilator thanks to the vane design and centrifugal force. Designed to be simply installed on roofs made of asbestos, galvanized steel, iron, and aluminum.Ventilation is guaranteed for 24 hours and 65 days.