Ganesh Engineering supplies Turbine Air Roof Ventilator. Ganesh Engineering is an ISO 9001:2000 awarded company. Turbine Air Roof Ventilator offers wide ranges Of textile machineries and accessories etc. Turbine Air Roof Ventilator works with natural wind force. Turbine Air Roof Ventilator is installed at a distance 15ft X 15ft. On the roof of industrial sheds. Turbine Air Roof Ventilator covers 225 Sq. Ft. Inside area and reduces 3 to 7 C the inside room / hall temperature.