ProLevel Filtration technology better captures microscopic dust that can harm health and trigger asthma or allergies. Most ProTeam vacuums have Four Levels of Filtration, each level designed to sift out smaller and smaller particles. The Intercept Micro Filter is the first line of defense. The unique ProTeam method of suction-vacuuming cleans carpets, hard floors, and other surfaces without stirring up dust – so the air stays cleaner, the furniture collects less dust, and operators can work without breathing unhealthy air in the indoor environment.