• The undulating vanes lead to smooth rotation at light wind.
• The bearings at lower and upper position make smooth turns.
• The rotation of the vanes brings the hot air, smoke and wet air
up to the roof and exhausts them out.
• Continuous rotation brings the fresh air regularly for easy ventilation
operation.
• The single rotating mechanism will work for long times e.g. 15
years if not physical damage to turbine.