The installation of natural ventilator need to be designed according to local conditions. In different geographical divisions, the installation of natural vent should also consider the geographical environment characteristics, and pay more attention to the windproof and rainproof performance.

There are actually many factors that need to be considered when we install natural ventilator on the roof. Such as the environmental conditions around the building, the overall area of ​​the plant, the number of factory employees, and local climate condition. 

In order to save expenses and make the plant ventilation scientific and reasonable, scientific calculations should be carried out, and then the number and location of the natural vent can be obtained.