• Enclosures made of fire resistant plastic resin, E2 class, according with ISO EN 11925-2: 2010, in areas close to motor and electrical components. • Nominal diameter 250 mm. • Induction motor, thermally protected, with shaft mounted on ball bearing supports, coupled with a centrifugal impeller. • High water resistance: IPX5 (if installed in a duct). • Speed adjustable through Vortice speed devices.
• Galvanized sheet-metal backdraught shutter with aluminium fins and return springs to prevent air back-draughts or penetration of rain when the unit is turned off.