These vacuum cleaners have HEPA Filters and or ULPA filters which are good filtration of the micro size particles. It could be used for many fields as like semiconductor, LCD, electronic devices, high tech science, hospital, food industry, laboratory and so on Specification Dimensions: 350mm x 650mmInside Filter: PaperPolyesterHepa FilterVacuum Motor : 1200W1.6HPFilter Average: 99.97%(0.3m)Tank Size:45lWeight: 14.25kgsPower: 220V50-60Hz