With the benefits of a clean-air system combined with the ultimate in filtration this bagged unit is made to clean. CRI Seal of Approval certified and clog resistant tools on board for convenience. CRI seal of approval - LEED compliant. Filtration: sealed HEPA. Container: allergen disposable dust bag. Dust Capacity: 4.5 dry qts. Tools: wand, crevice tool, dusting brush. 3:1 Stretch hose, Motor 135 CFM, 69 dB per ASTM.