Simply Silent DX100 square grille fascia 4\' 100mm extract fan, featuring Ghost Air Movement Technology for quiet running, with humidistat and timer control which boosts when humidity in the room increases while the timer continues to work after the fan is switched off. The timer is adjustable at installation from 30 seconds to 30 minutes.\r\n \r\nKey Features:\r\n\r\n\r\nExtremely quiet running - only 22dBA@3M at low speed\r\n\r\n\r\n \r\n\r\n\r\nStylish traditional grille design available in square and round\r\n\r\n\r\n \r\n\r\n\r\n2 speeds 15l/s and 21l/s - selectable at install\r\n\r\n\r\n \r\n\r\n\r\nSuitable for wall, ceiling, panel and window fitting\r\n\r\n\r\n \r\n\r\n\r\nComplies with building regulations Part F and L\r\n\r\n\r\n \r\n\r\n\r\nElectrical power rating (W):6.7 / 7.7\r\n\r\n\r\n \r\n\r\n\r\nExtract performance (FID, M3/h) Max/Min:54 / 76\r\n\r\n\r\n \r\n\r\n\r\nExtract performance (FID, l/s) Max/Min:15 / 21\r\n\r\n\r\n \r\n\r\n\r\nSound pressure level db(A)@3m:22 / 34\r\n\r\n\r\n \r\n\r\n\r\nSpecific Fan Power (SFP) (W/l/s):0.45 / 0.37\r\n\r\n\r\n \r\n\r\n\r\nOperation Speeds :2\r\n\r\n\r\n \r\n\r\n\r\nUK Guarantee (Years):2\r\n\r\n\r\n \r\n\r\n\r\nIPX Rating :4\r\nTimer:Yes\r\n\r\n\r\n \r\n\r\nHumidistat:Yes\r\n