• Frame and scroll: painted pressed steel, with multiple fixing holes configured to allow alignment of the motor in 8 different positions relative to the outlet port. • Three-phase AC motor with 1 operating speed and shaft turning in ball bearings. • Centrifugal impeller with forward-curved blades of zinc-coated steel, dynamically balanced (UNI ISO 1940, Point 1 – Class 6.3). • Maximum air flow: 4500 m3/h.