General Features: For duct application; False ceiling mounting; Drain
hole Ø100 mm; Butterfly shutter prevents the return of smoke and odours in the
environment; Particle filter (for grease, dust, etc.); Made of shockproof and
heat resistant ABS plastic; Induction motor – Insulation class B – 1400 Rpm
with self lubricating bushes; Overheat protection incorporated in the motor; Non-return
butterfly shutter included in the box; Applied on ceilings with panels up to 40
mm maximum thickness.