Shandong Wanju Farming Machinery Equipment Co., Ltd.

Free hotline:400-0708-775

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Free hotline:400-0708-775
Address:No. 1888, Fuying Street, Economic Development Zone, Qingzhou City, Shandong Province

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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