This model incorporates a condensation (humidity) sensor which automatically switches the fan on when the condensation level builds up. Once the condensation clears the fan turns off. Airvent are part of the Vent Axia group Dimensions: 224mm wide x 224mm tall x 15mm deep (beyond installed surface). 145mm diameter spigot, extends for 110mm. For connection to 150mm / 6 inch ducting

_Mains voltage 230/240V AC 50Hz
_Extraction rate 63 litres per second, 228 cubic metres per hour
_Power consumption: 25watts, Sound output: only 45dB(A) @ 3m
_Double spring operated backdraught shutter
_IP44 rated, CE approved