Poultry House Hanging Ventilation FanPoultry House Hanging Ventilation Fan is a type of Axial Blower and Ventilation Fan which has Perfect Efficiency. The function about Hanging Ventilation Fan is mainly for Best Air Circulation to keep house cooler in a very short time. Hanging Ventilation Fan is the perfect choice for Semi-open Broiler House,Website:http://www.farmkeys.com,Dairy Farms and Beef House etc. Hanging Ventilation Fan can work with Spray System to get the best cooling in Semi-open Farm.ModelSpecifications Blades Diameter(mm)Blades RotationalSpeed(rpm)Motor RotationalSpeed(rpm)Air Flow(m³/h)Noise Decibels(dB)Input Power(kw)Power Parameter Height(mm)Width(mm)Thickness(mm)50â??â??1250439140042000â?¤671.1380V/50Hz1380138029040â??â??1000600140032500â?¤670.75380V/50Hz1100110028036â??â??900610140029500â?¤670.55380V/50Hz10001000280Test proved: in order to get the best ventilation effect, optimum installation site lies in the right above of the feeding trough. distance between the fanâ??s bottom and ground is 2.7m. Inclination angle is better from 15°to 30°.