Characteristics and parameters of ventilation fan:

   Automatic roof ventilator is a narural environmental-friendly equment,which uses the increasing pressure between gentle outdoor breeze or rain and indoor air to generate the host rotating exhaust,applying to industrial plants,greenhouse,hens for livestock and poultry,and other building.

 High-quality alloy body;                   Notable exhaust performance;

 Unique duct;                                       Simple installation and maintenance;

 No energy consumption;

Available for a decade