Simply Silent Contour C4 range of 4 inch/100mm extractor fans are ideal for bathrooms, shower rooms, cloakrooms and toilets. They can be easily fitted in walls, ceilings and panels and have a choice of two speeds to select from at install to conform to Building Regulations Part F requirements.- 2 speed options, 15 or 21 l/s, selectable at installation for application- 6.3 / 7.0 watt power consumption using AC motor- Supplied with both circular and square baffles for preferred style finish- Ghost Airmovement technology for near silent running- Meets Part F of Building Regulations- Suitable for wall, ceiling, panel and window fitting