FAQ Search Select a Category Cleaning Formulas Cleaning Tips Commercial Products Corporate Deep Cleaners Hard Floor Cleaners Mops, Brooms and Brushes Parts and Accessories Steam Sweepers Vacuums Warranty Web Site and/or go What does Multi-Level Separation mean with my PowerGlide® with Lift-Off® Technology Vacuum? Answer: Multi Level Separation help reduce allergens – Multi-cyclonic separation (Essentially the overall design of the hoses and tank), the pre-motor filters, and the post motor filter work together as a system to pull over 97% of all particles 1 micron or larger out of the air traveling through the vacuum. Also, this filtration system helps to reduce allergens, some of which are the smallest particle sizes referenced in industry filter ratings. This product does NOT contain a HEPA Media Filter Related Questions Why is my vacuum sounding loud? What should I check? Why is the brush roll on my Lift-Off® Floors & More not turning? The brush on my Powerlifter® (1307 & 1309 models) is not spinning. What do I check? My AeroSwift® Vacuum has no power. What should I do?