Much Heavier Duty than its smaller cousins, this unit has more than enough power for 2-3 machines (using Shut Offs at each unused machine). Perfect for the home handyman or small trade workshop. With its 4x sturdy castor wheels, this machine is easily manouvered to a new work area. The quick release band ensures an efficient bag change/empty time. Also has cap-covers for its hose connection ports which enables you to achieve maximum suction of a single when one port is closed. With a pleated cartridge filter replacing the usual Needlefelt top-bag, you increase the surface area of the filtration by approximately 700% meaning you will now successfully extract dust down to 1 Micron. With a handle at the top of the filter rotating the internal beaters, cleaning the filter has never been easier.