• Pickled and phosphated steel housing with polyester powder-coated finish, resistant to the aggressive action of atmospheric agents. • Nominal diameter 200 mm. • 2 speed AC motor with thermal overload cutout and shaft turning in ball bearings, coupled to backward curved centrifugal impeller. • Operation controllable by remote sensors monitoring: Temperature, Relative Humidity, Smoke and Presence. • Zinc-coated steel brackets for wall mounting. • Speed adjustable through Vortice speed control.