• Material: plastic resin, colour grey, resistant to ageing. • 4 ports for connection to extractor ducts, nominal diameter 125 mm; • 1 port for connection to exhaust duct, nominal diameter 125 mm • 3 speed EC motor with shaft turning in ball bearings, coupled to a centrifugal impeller; electronic control provided by microprocessor. • Air flow between 72 m3/h and 500 m3/h • 2 x closure plug for connection ports, diameter 125 mm. • Facility of controlling fan and timer from a remote handset powered by long life solar cells • IMQ SAFETY certification.