Shandong Wanju Farming Machinery Equipment Co., Ltd.

Free hotline:400-0708-775

Product list

Contact us

Phone:+86-536-3250678
Fax:+86-536-3250678
Tel:+(86)15153658333
Website:www.sdwjnm.com
Email:wjnm16@163.com
Free hotline:400-0708-775
Alibaba:https://sdwjnm.1688.com
Address:No. 1888, Fuying Street, Economic Development Zone, Qingzhou City, Shandong Province

Of your current location: Home  > Cooling fan
Powerless roof ventilator


Powerless automatic roof ventilator is environmental-friendly natural ventilation equipment. With the indoor & outdoor air pressure difference formed by pressure of rising outdoor breeze or indoor hot air, it realizes automatic swivel. It is widely applied for ventilation and air displacement in factory plant, flower greenhouse, animal building and all kinds of buildings.
◆Need no energy, environment-friendly, one-time investment for free lifetime use
◆High efficient air & moisture removal capacity, better than that of similar products over 25%
◆Unique blade design with sensitive operation and wind-proof & rain-proof 
◆Imported bearing, no noise and no need of maintenance, durability
◆Unique variable angle tube neck help to realize easy installation
上一篇:Fan
下一篇:Fan