Air Top Ventilator is the intentional movement of air from outside a building to the inside. Air Ventilation used for providing acceptable indoor air quality. The vents or flues carry the impurities to be expelled from the building, in a way which does not cause harm to the occupants of the building.
The centrifugal force generated by the spinning vanes creates a low-pressure region which helps in the suction of the air. Air drawn out by the suction action is continuously replaced by the fresh air from outside.