Abstract: This racked section is of the metal twin-U type whose middle legs are joined together by the rack properly speaking and whose lateral legs are smaller in height than the preceding ones. It is fitted with ribbons of a flexible material which hide the means for fixing to their support the bottoms of the U of the section.This fixing is obtained by providing along one of the edges of these ribbons means for clipping to the lateral legs of each U. The opposite edge of each ribbon is in the form of a thin lip overhanging the rack so as to partially hide it while allowing the introduction therein of brackets, stops, etc.