Silent Bathroom Extractor Fans. By combining decorative appeal with utility features extractor fan front panels are astylish choice for interior design. 100mm or 125mm. 125mm - 9W. 125mm - 28Db. Humidity Sensor – the exhaust fans permanently supplied with power are switched on when the humidity in a room is detected.They are switched off with a regulated delay from 3 to 30 minutes.
