Device intended for the hooking of panels on a wall in order to constitute a covering on this wall

A mounting assembly for fixing a wall covering comprised of a plurality of panels on a wall, said mounting assembly comprising for each said panel plural support members in aligned spaced relation having means for attachment on the wall, an upper and a lower set of panel bearing elements having means for securement to each said panel, an elongate one-piece structural element including a main web, a first longitudinal groove disposed on one side of said main web and hooked onto said support members in longitudinally adjustable relation with respect thereto, a pair of upper and lower second longitudinal grooves disposed on the opposite side of said main web, each said second groove longitudinally adjustably receiving one of said sets of panel bearing elements, said upper second longitudinal groove receiving said lower set of panel bearing elements of an upper panel and said lower second longitudinal groove receiving said upper set of panel bearing elements of a next lower panel.