The simply silent contour 92960AW C4S from Xpelair is a 4 100mm extractor fan with a range of premium and innovative design features. Part of Xpelairs latest range of domestic extractor fans, the C4S utilizes revolutionary Ghost air movement technology, making this the quietest intermittent fan range available on the market today. For use with an external switch or sensor. Is typically connected to the room lighting circuit. The slim and sleek design of the C4S is accompanied by SoSimple installation technology to offer a painless and hassle free set-up in walls, ceilings, and panels. The C4S comes in two speed choices from 15litres per second to 21 litres per second which are selectable at install to provide the most effective air extraction method for you, and offering extra control over humidity and odours in bathrooms, shower rooms, cloakrooms, and toilets. Main Features: The quietest intermittent bathroom fan on the market Sleek and subtle design with interchangeable