This DLFH series counterweight negative pressure fan is a standardized ventilation and cooling equipment from Gaomu Machinery, available in three standard sizes: 400, 500 and 600, widely used in livestock farms, workshops, greenhouses and other venues.

The integrated frame is made of thickened galvanized steel plate, matched with stamped stainless steel fan blades, featuring strong corrosion resistance, anti-deformation and anti-fracture performance. Equipped with high-strength nylon counterweight automatic shutter mechanism, the shutters close automatically when the fan stops, effectively blocking mosquitoes and cold air. The motor supports dual voltage of 220V/380V, with low noise and low power consumption. All fan blades are calibrated by professional dynamic balance tester to ensure stable operation and slight vibration. Designed with large air flow, it can quickly replace indoor dirty air to realize cooling, dust removal and air exchange. Easy to install and long service life, it is an economical and high-efficiency ventilation solution for small and medium spaces.

Main Technical Parameters