The Sanitaire Deep Cleaning Upright is the most impressive upright vacuum the brand has to offer. Its 7 amp motor provides consisten power throughout the years. Center mounted, funnel shaped air intake allows air flow to evenly distribute across 12″ cleaning path. Its advanced micron allergen filtration system retains up to 99% of pollens, household dust mites and other allergens as small as 1 micron– that’s 10 times more particles than ordinary vacuum filtrration systems. Vibra Groomer I brushroll is made of tempered extruded aluminum and is contoured as a spiral, enhancing agitation to clean carpets deeper and more thoroughly. Suction fan features extra large diameter and tall blades that are teh best in the industry. Convenient front mounted adjustment knob allows user to switch between eight diffierent heights to accommodate all kinds of carpet. The Sanitaire Bagged Upright comes with a 5-year limited warranty and 10-year limited motor warranty.