Device for slidably fixing vehicle components

The device has a base body (12) set parallel to the floor to form a profiled rail on which the seat is mounted. The base body has two plate-like elements (24, 26) set parallel spaced from each other and connected together in force-locking engagement through reinforcement structures (28). The distance between the elements is less than the overall height of the base body to form a hollow cavity (30) between the base body and floor (16). The fixing points between the base body and floor are set inside the guide rails (20).