Abstract: The invention relates to an assembly comprising a door leaf (1), which has at least two undercut blind holes (26), and comprising at least two hinges (3) each consisting of a door-side and a wall-side hinge part (4,5). In order to fasten the door-side and/or wall-side hinge part, expanding plugs (20) are provided that have a distal expanding element (22) as well as a retaining and stop element (23). In addition, an expanding/fastening element (21) is provided that serves to expand the expanding elements and to fasten the hinge to the expanding plug. The expanding/fastening element can comprise a screw bolt (26) and a nut (28) or a mounting part (30) with a hole for accommodating a screw (31), with which the mounting part is screwed to the expanding plug. The invention also relates to a shower stall having one or more lateral walls and one or more assemblies of the aforementioned type.