Negative Pressure Heavy Hammer Balance Ventilation Fan

1. Introduction     The hammer balance exhaust fan is fitted with a swing drop hammer mechanism, which allows the shutters to open and close smoothly and flexibly. Featuring low noise, large air volume and high working efficiency, this counterweight exhaust fan is widely installed in livestock farms, agricultural greenhouses and industrial workshops to meet the demands of ventilation, cooling and dust removal. 2. Technical Parameters     This swing hammer cooling fan is available in 7 different models.  3. Product Details & Our Advantages     Kunzheng ventilation fan dedicates itself to elaborate workmanship for every product. With over ten years of manufacturing experience, we source premium raw materials from qualified suppliers to deliver reliable and satisfactory products to customers. (1) Equipped with high-strength nylon swing drop hammer opening assembly, the fan minimizes air resistance and maximizes air flow. When fully closed, the shutters form a tight seal to effectively…