Cordless Backpack Dust Extractor Filtration Type HEPA Filter Efficiency 99.97 Percent at 0.3 microns Air Flow 67 cfm Voltage 40 V Collection Type Disposable Bag Tank Size 0.5 gal Hose Diameter 1 in Battery Capacity 5 Ah Hose Length 59 in Static Pressure 72 in Sound Level Not Rated Charger Included No