... system scirocco ventilator Air flow(m3/h): 1500~50000Noise dB(A): 53~85Voltage(V): 220/380SpecificationClean airSend fresh air in, exit foul air, ... to remove a few of bolts from any side of the unit, can repair any parts,excellent design, economic operation,stable ... thus effectively energy saving Precautions The distance between foul air outlet and fresh air inlet should not less than 1000mm, to avoid ...