receipt of a corresponding end of the hinge structure 104 formed generally as a cylinder or a rod 142 fig2 b shows a further enlarged portion of the connection of panels 102 with a hinge structure 104 the pocket 140 is configured to define an opening or a mouth 144 through which the rod 142 of the hinge structure 104 is received during assembly of the two components it is noted that in one embodiment the width w of the opening 144 is smaller than a diameter or cross sectional width of the rod 142 thus with regard to such an embodiment the pocket is elastically deformed to force the rod 142 through the opening 144 defined by the pocket 140 during assembly disassembly of a panel 102 and a hinge structure 104 when assembled the panels 102 are able to rotate relative to the hinge structure 104 such as is indicated by directional arrow 146 the ends 148 of the pocket 140 that serve to define the opening 144 and may be configured to either limit or permit a desired degree of rotation of the panel 102 with respect to the hinge structure 104 for example the degree of relative rotation may be limited when one of the ends 148 abuts a wall or other component of the hinge structure 104 in addition to the rod 142 being retained within the pocket 140 by virtue of the interference between the rod 142 and the opening 144 a.