• Version with built-in switch operated by pullcord mounted to edge of grille. • Material: UV resistant plastic (prevents ageing caused by exposure to sunlight). • Nominal diameter 150 mm. • Motor protected against thermal overload, with shaft turning in self-lubricating bushings, coupled to screw type thermoplastic impeller with wing profile blades. • Maximum air flow: 335 m3/h. • Equipped with system by which the louvres of the grille are opened and closed automatically. • IMQ SAFETY and IMQ PERFORMANCE certifications • Vortice speed controller.