·For the wide chicken house, the downdraft fan can effectively assist the air flow from the small window into the center of the chicken house to complete the ventilation and air intake cycle;

·Automatically control opening and closing according to sensor signal feedback;

·Adopt 18 inch galvanized sheet fan, add protective net at the upper part and air collecting duct at the lower part to reduce the impact of air diffusion on chickens;

·Adjustable speed, manual speed regulation, no feed blowing.