BLIZZARD Duct fans (inline mixed flow fans) are intended for use in ventilation systems of industrial, public, and residential buildings. The duct funs are connected to round ducts. Electric fans are designed to remove air and other non-explosive gas-air mixtures that do not contain sticky substances and fibrous materials, with a dust and other solid impurities content of no more than 10mg/m³. The fans are designed to be connected to an alternating current with a voltage of 220-240V and a frequency of 50/60Hz. According to the shock-hazard protection type, the fans refer to Class II devices, in accordance. The climate category «moderately cold» Type «4». Fan protection rating against access to hazardous parts and water ingress: IPX4 for the fan.