Nobles SCOUT 37B Battery Powered Walk Behind Sweeper with dust control offers a 37-inch cleaning path and side broom for superior cleaning productivity. The Scout™ 37B sweeper uses a panel filter along with a low pressure air current to capture and filter dirt and dust. Optional micron filter panel is also available for hightly sensitive environments. Large 2.6 cubic foot hopper for less down time emptying. Two 12-volt batteries and a built-in fully automatic battery charger come standard with this sweeper. For indoor or outdoor use with a simple brush change.