The Centrif Duo Plus HTP Extractor Fan is designed for kitchens, utility rooms, and large bathrooms. It can be surface mounted directly into standard 100mm diameter ducting, allowing for through-the-wall or ceiling installation. Operation is managed by an integral humidity sensor or a pullcord, with separate speeds selectable for each mode. An optional continuous trickle speed can be set during installation. The fan features a 100mm circular spigot, which can be converted to a side outlet using the flush mounting kit. It also includes a built-in, spring-operated back draught shutter. The fan can be wall or ceiling mounted and is finished in white. Dimensions are H: 261mm x W: 231mm x D: 140mm.