... the dust 2.small volume, large filter space, low noise DF portable filter cartridge cleaners is a convenient and practical product ... on. This cleaner has the advantages of folding filter cartridge structure, small volume, large filter space, great processing amount of wind, low ... m³/h)Vacuum degree(KPa)Filter area(m³)Air intake(mm)Collecting efficiency(%)No. offilter cartridge(pc)Floor spaceHeigh(cm) ...