The Vent-Axia Centrif Duo Pullcord Standard Model is part of a series of 100mm centrifugal extractor fans for the domestic environment and use in kitchens, utility rooms and large bathrooms. Surface mounting directly into standard 100mm diameter ducting, through the wall or ceiling installation. The range is designed to provide extraction levels that comply with Building Regulation requirements, with special humidity sensing variants for local authority use. The Centrif Duo Humidity Timer Pullcord is Intermittent on 1 of 2 speeds (Utility or Kitchen selectable at installation). Operation by integral humidity sensor or pullcord. Separate speeds selectable for humidistat and pullcord. Optional continuous trickle speed available at installation. The motor features greased-for-life ball bearings which allow the fan to be installed at any angle. Insulation is Class E. Double insulated appliance. Supply voltage 220- 240V/1/50Hz. The Centrif Duo has a 100mm circular spigot. The Flush mounting kit enables the spigot to be converted to a side outlet. The spigot also encloses a built-in, spring operated back draught shutter. The Centrif Duo Range can be wall mounted using a telescopic wall fitting kit available as an accessory (requires a 115mm diameter hole).