The Xpelair C4HTS 100mm (4 Inch) Humidity/Timer Square Extractor Fan offers a two speed facility (15 and 21 l/s) option which is selectable at install. The Humidity/Timer function boosts when humidity in the room increase while the timer continues to work after the fan is switched off. The Simply silent contour extract fans feature unique and innovative Ghost Air movement technology to deliver near silent running. Fan noise comes from both the motor and the movement of air, to combat this Ghost Technology uses long life silent running quality motors and precision engineered components to avoid all forms of mechanical noise. advanced air flow management eliminates turbulence and irregular air flow paths within the fan.
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