In a structure for supporting components of a wall, one lower profile
section is shaped to form longitudinal recesses and an operating unit is
associated with the lower profile section base, and removably coupled at
top to at least one structural element. The operating unit has one foot,
shaped to form at least one protrusion for coupling, when the operating
unit is rotated about a vertical axis, with the longitudinal recesses by
engagement at least of the protrusion with a matching portion of the
recesses, thus forming a bayonet joint between the operating unit and the
lower profile section.