Stanchion for a commercial vehicle

A rung for a commercial vehicle comprises a base profile (11) that can be fixed to a rung bearing adjacent to a loading floor of a commercial vehicle, and a support profile (12) partially accommodated in the base profile (11), on which a head part with a carriage is mounted, by means of which the rung is movably mounted along a rail of a roof structure, wherein at least one carrying shell (5) for receiving a lath is provided on at least one outer side of a side wall (22) of the base profile (11), wherein a wall (30) of the support profile (12) adjacent to an inner side of the side wall (22) of the base profile (11) extends, as seen in cross-section, at least partially at an angle to the side wall (22), in order to form a receptacle for fastening means for the carrying shell (5) between the side wall (22) of the base profile (11) and the wall (30) of the support profile (12).