ProTeam Backpack Vacuums, Super CoachVac Commercial Backpack Vacuum Cleaner with HEPA Media Filtration and Telescoping Wand Tool Kit, 10 Quart, Corded VERSATILE - Powerful motor is perfect for cleaning hard floors, carpets, stairs, and upholstery; maneuvers easily around desks, chairs, and equipment. Voltage: 120V LARGE CAPACITY - 10-quart filter provides maximum cleaning ability with 3 times the capacity of a standard upright vac making it perfect for large areas IMPROVED AIR QUALITY - Four Level Advanced Filtration with HEPA media filter to help students and teachers breathe better air; certified Gold by the Carpet and Rug Institute (CRI) QUIET OPERATION - Not only does this backpack vac include accessories needed for classrooms and campuses, at only 66 dBA, this vacuum is one of the quietest in its class. Filtration : ProLevel Filtration w/ Four Levels of Filtration: 1190 square inch total area Ideal vacuum backpack for high-traffic areas including schools, universities, and college campuses; the extra-long 50-foot power cord allows for more cleaning with less unplugging