• Material: UV resistant plastic (prevents ageing caused by exposure to sunlight). • Nominal diameter: 120 mm • EC motor protected against thermal overload, with shaft turning in ball bearings; 2 operating speeds controlled electronically from pcb. • Maximum air flow 130 m3/h • Equipped with non-return damper preventing unwanted backdraught when the fan is off. • Fixed timer: the product works for 6 minutes at maximum speed, then automatically return to minimum.