<p>The molding part (8) has form-stable base parts (9) comprising a stack stopper (11) projected in a stacking direction for the base parts, where the molding part is three-dimensional and formed as a single piece in sheet metal material. The base parts connected to each other and form two sides of the molding part. Leg parts (12) project the base parts in the stacking direction and are flexibly bent.</p>
