Get efficient, long life with Sanitaire's UL listed commercial upright, model SC684. Deep-down cleaning action is possible with the spiral design of the exclusive Vibra Groomer II brush roll. The Vibra Groomer II produces an effective wave action that vibrates deeply embedded dirt. This Sanitaire can clean any size room and any type of carpet with six carpet level adjustments, a 12-inch cleaning width and a 50-foot power cord. For maximum cleaning efficiency, the answer is the Sanitaire SC684. .