Vectaire Elegance Series Axial Fan is suitable for retro fitting or new builds but especially for private and social housing tenanted properties due to the combination of silent running, only 15dB, so it will not disturb occupants in adjacent bedrooms. This 4″ diameter fan continually removes 9.5 litres of air per second in low speed setting at a wattage rate of 1.3 which is currently the lowest energy consumption for extract fans.