The Vent-Axia Lo-Carbon Quadra Timer & Pullcord offers a single fan suitable for surface or flush mounting. Low speed selectable between 6, 9 and 12l/s and high between 15, 30 and 60l/s all with through the wall or two ducted selections to ensure installed performance is met. The Lo-Carbon Quadra has been designed with ventilation for every room in mind. With discrete aesthetics and low noise levels due to an accurately balanced impeller, the Lo-Carbon Quadra is also one of the most unobtrusive centrifugal kitchen fans available. The front cover design also provides no area for dirt to build-up, so it stays looking cleaner for longer.