Elongated and thin-walled structural member (10) with several views (101, 102, 103, 104) extending along a longitudinal axis so that the member exhibits multiple rotational symmetry around the longitudinal axis (9). Each rotationally symmetric view includes a support surface (11) as support and fastening point for a wall facing and a connection surface (12, 12′) for fastening of the member to other structural members. It is characteristic that the connection surface (12, 12′) is disposed recessed with respect to the support surface (11) and at a spacing so that, when the member is fastened with ordinary fastening means via the connection surface, the fastening means do not protrude from the support surface. The connection surfaces (12, 12′) are provided with a regular pattern of holes (13) to serve as passages for the fastening means. An assembly of such structural members is also described.