Abstract: A device for fixing a component includes a first and second flange arranged opposite to each other comprising a slot and an outer side comprising a first detent toothing comprising a plurality of detent teeth directed transversely to the slots comprising an upper flank with an undercut. A bolt is configured to slide into the slot so as to affix the component in a height-adjustable manner. First and second extruded bearing elements are arranged at the outer side of the respective first and second flange comprising a second detent toothing at a side facing the respective first and second flange. The second detent toothing comprises at least one detent tooth comprising a lower flank with an undercut. The second detent toothing is configured to hang with the first detent toothing in at least one indexing position of different heights and to connect onto the first detent toothing via the undercuts.