The Record Power AC400 Air Filter has a two stage filtration system with pocket filters to provide filtration down to 1 micron. It has 3 speeds and a timer function so you can leave the unit to run for a period after you have finished in the workshop. Both of which can be applied via the remote control. Useful for reducing nuisance dust, particularly in small workshops. Provides effective filtration for workshops up to 113msup3;. Input Power: 100WFiltration Rate: 409 CFM/min.Filtration: 1 MicronNoise Level: 69 dBSize (HxWxD): 258 x 431 x 514mmWeight: 14kg