Use vacuum to connect to shoe cleaner where central vacuum is not available. Portable, self-contained 100 CFM vacuum producer, Equipped with microstatic filter which is 80% ASHRAE tested. Contaminants deposited in easily removed disposable paper bags, 120V, 60 HZ. (220V, 50 HZ optional,) 20"H x 15"W. Circumference - 45", 6 amps, 1 HP, 4 gal. capacity.