A module supporting system comprising a supporting structure having a front side provided with a horizontal groove therein, an upwardly facing hook within and extending longitudinally of the groove adjacent the bottom thereof and secured to the supporting structure, a module having a rear side adapted to abut the front side of the supporting structure, and a horizontally extending, downwardly facing hook secured to and projecting rearwardly from the rear side of the module, the downwardly facing hook being complementary to and interengageable with the upwardly facing hook, with the rear side of the module abutting the front side of the supporting structure. With this construction, the weight of the module is carried by the hooks without imparting any twisting forces to the hooks.