The carriage, which serves for holding a slidable separation element, comprises a carriage body and at least one running wheel, which is a rolling along a rail when the separation elements is displaced. According to the invention the carriage body comprises a housing with an interior space, in which a holding unit is provided, which is protruding through an opening out of the housing and which is seated slidable in a direction at least approximately vertically to the running direction of the carriage, and which the holding unit comprises a holding element that interacts within the housing with an adjusting element, that is displaceable in relation to the holding element by means of an adjusting screw, which is held by the carriage body, so that the holding unit is held at a selected position, whereas either the part of the holding unit that is protruding out of the housing is provided with the at least one running wheel and the carriage body is connected to the separation element; or the part of the holding unit that is protruding out of the housing is connected to the separation element and the carriage body is provided with the at least one running wheel.