Wind driven Power ventilators are unique aluminum ventilation systems. These are power saving exhaust systems, Which are secured onto industrial roof tops for round the year effective ventilation and that too at no operating cost. These be utilized in factory sheds, Production utility areas compressor rooms boiler rooms, Such as, And packing generator rooms areas and warehouses. These unique ventilation systems are economical, Environment, Friendly weather storm proof, Leakage proof, Maintenance and noise free. These air ventilation system help exhaust heat, Smoke, Gases, Fumes, And dust from their place of installation. Their performance depends on three variable factors the stack height the wind velocity the inside operating temperature