The T 12/1 comes standard with a fleece filter bag which allows up to 3x higher filter volume than a paper filter bag. This benefit pays for itself through longer operating periods between filter bag changes. Motor performance, air flow and the 6-stage filter system (with optional microfilter) have been designed to prevent loss of suction power. Its low center of gravity provides stability. The power cable can be stored in the cable storage or on a pull-out cable hook for convenience when changing rooms frequently. The suction hose on the unit has a simple but effective plug-in clip system that ensures the suction hose does not become detached when the unit is pulled along behind the user. The new clip system allows an easy extension of the suction hose for cleaning steps and stairways. A power brush converts the unit to a brush-type vacuum cleaner. In cases where hygienic standards are stringent, a HEPA filter can be used with the paper filter bag.