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Vacuum cleaners come in several configurations. Upright vacuum cleaners have a pump mounted directly above a suction intake, with a bag mounted on the handle, which rises to about waist height. Canister (or cylinder) designs have the motor and bag in a separate canister unit (usually mounted on wheels) connected to the vacuum head by a flexible hose. Central vacuum cleaners move the suction motor and bag to a central location in the building and provide vacuum inlets at strategic places throughout the building: only the hose and pickup head need be carried from room to room. Most vacuum cleaners require supplies, such as bags, filters and belts.
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