Formation of a communication arch (A) over a consumer corridor, such as in large sales points, displaying at a height, a media (M) related to a certain product. For such, after mounting a display box (35) using the cutting and creasing design, its units are mounted to one another by coupling through the coupling flaps (29) of one unit to the cutouts (4) corresponding to the subsequent unit. After mounting the assembly, when it is raised and has its peripheral units settled over two opposite shelves, such as in a supermarket corridor, through the trapezoidal geometry of the display boxes (35) combined to slide coupling flaps (29) and cutouts ( ) between the units (35), there is a radial movement and positioning for its tops (16) while its bottoms (6) meet, providing the structuring of the assembly, in an arch shape, supporting the resulting stresses imposed vertically from top to bottom of the arch formed. Therefore, the communication arch (A) formed can receive a large media at its highest point.