The ProTeam Sierra Backpack Vacuum with the Wessel Werk Power Nozzle Commercial Kit is the finest and most powerful way to clean commercial to plush pile carpeting. Utilizing the Wessel Werk EBK340 power nozzle that has a full 17 inches cleaning path and is unsurpassed in performance and reliability! This power nozzle has the largest commercial grade motor available and uses the "Never Fail" cogged fiberglass reinforced belt. The brush roller rotates at an astounding 6000 RPM's which is twice as fast as the normal power brush providing your with greater cleaning ability. This power brush does not need to be adjusted to fit different heights of carpet, it does so automatically as you vacuum quickly and easily saving you time. Using a double row chevron designed brushes that channel the dirt from the outer edges of the power nozzle into the center draw hole quickly eliminating dirt. Remember that unlike other backpack vacuums the Sierra can be used as a canister vacuum too! The ProTeam Sierra Backpack Vacuum Cleaner utilizes ProTeam's patented Four-Level Filtration system that captures such dangerous things as allergens, tiny dust mites, bacteria and floating particles. These type of contaminants violate the environment of our air and put our health and the health of others at risk. This is accomplished by the unique approach designed by ProTeam suctioning of the vacuuming that cleans carpets, hard floors and other surfaces without stirring up dust. The ProTeam Sierra Backpack Vacuum Specifications Weighs only 10 pounds Four level filtration system Uses Micro Filter with 454 square inches of filtration media 928 watts of power Airflow is 95 cubic feet per minute Static lift is 92 inches Amps is 8.3 Quiet 68 decibel operational noise level Warranty The ProTeam Sierra Warranty is 3 years parts, labor, and motor*. Lifetime on molded body parts.