A device for supporting and guiding the movement, in both a longitudinal direction and a lateral direction, of a sliding panel in a frame structure by using guide tracks and vertically adjustable guide castors. The vertical position of the sliding panel is adjustable with the aid of a bogie-based carrying wheel mechanism. A locking mechanism with a specially designed striking plate assists longitudinal and sideways movement of the sliding panel into a locking position for locking of the sliding panel.