• Material: UV resistant plastic (prevents ageing caused by exposure to sunlight). • Nominal diameter: 100 mm • 2 speed motor with thermal overload protection and shaft turning in ball bearings, coupled to a forward-bladed centrifugal impeller. • Minimum air flow: 26 m3/h Maximum air flow 78 m3/h • Non-return damper fitted to outlet port. • Vortice speed controller.