Simply Silent DX100 round grille fascia 4\' 100mm extract fan, featuring Ghost Air Movement Technology for quiet running. For use with an external switch or sensor. Is typically connected to the room lighting circuit.\r\nKey Features:\r\n\r\nExtremely quiet running - only 22dBA@3M at low speed\r\nStylish traditional grille design available in square and round\r\n2 speeds 15l/s and 21l/s - selectable at install\r\nSuitable for wall, ceiling, panel, and window fitting\r\nComplies with building regulations Part F and L\r\nElectrical power rating (W):6.7 / 7.7\r\nExtract performance (FID, M3/h) Max/Min:54 / 76\r\nExtract performance (FID, l/s) Max/Min:15 / 21\r\nSound pressure level dB(A)@3m:22 / 34\r\nSpecific Fan Power (SFP) (W/l/s):0.45 / 0.37\r\nOperation Speeds:2\r\nUK Guarantee (Years):2\r\nIPX Rating:4\r\n