This version of the Nilfisk GM80 vacuum comes complete with a HEPA Filter, variable speed control, the micro tool kit, as well as the standard nozzle attachments; making it the ideal all around vacuum for the museum environment. Equipped with a 4-stage filtration system featuring an easily changed disposable dirt bag, extra large cotton main filter, microfilter, and HEPA (High Efficiency Particulate Air) exhaust filter. This vacuum with Hepa Cartridge is capable of retaining 99.97% of all particles down to and including 0.3 microns in size. If equipped with Ulpa cartridge it is capable of retaining 99.99% of all particles to and including 0.13 microns in size. Featuring a 3.25 gallon tank capacity, this vacuum can be used in both portable and stationary applications. The GM80 is mounted on a wheeled trolley for added mobility. The combination of variable suction, filtration capabilities, quiet performance, and mobility make this an the best all around vacuum for the museum professional.