The VA14/150KHP is a 150mm Spigot Single Speed Kitchen Extract Fan With a Adjustable Humidity (Between 62-82%RH) and a  Overun timer between 3 to 30 Minutes. With features like a thermo electric shutter to prevent back draughts, and IP44 rating so that it can be installed in Zone 2 safely. Suitable for wall, ceiling, panel and window mounting and compliant to Building Regulations approved document F. Humidistat controlled kitchen extract fan with adjustable overrun timer (3-25 mins) Humidity adjustment 62-82% RH. Technical Specifications Power Consumption: 18.8 Watts Sound: 36 dB(A) at 3 Metres Wall Fixing Hole: 152mm Diameter Window Fixing Hole: 160mm Diameter  IP Rating: IP44 Warranty: 2 Years Dimensions: Height: 216mm x Width 224mm x Depth: 60mm 150mm (6\") Spigot Humidity Sensor adjustable between 62-82% and Pullcord Overide Extract Performance - 245 m3/hour or 68 Litres Per Second