An Air Ventilator is a mechanical system that brings in fresh outdoor air into the workplace (factory or manufacturing plant) and removes contaminated indoor air. It might be as simple as opening windows to let in outdoor and exhaust indoor air. It can be as complicated as using large-scale specialised mechanical ventilation systems. Roof ventilation systems are designed to help improve air flow and make the building cooler and more comfortable for personnel on the work floor. The ventilator is designed in various types and is very useful. The air ventilator is an essential part of the various industries as per the need.