The fans of the AC series are suitable for the ventilation in residential, commercial and industrial buildings in which are requested relevant air deliveries without canalization. The series includes 2 versions: AC/A and AC/B, with impeller diameter from 300 a 1250 mm and different motor polarity. The AC-A model has a shaped cone in the inlet side, while for the AC/B the shaped cone is present also on the outlet. They are designed for clean air in the temperature range -10°C +50°C.