utilizes hinging device 30 in fig4 a is shown two substantially parallel and confronting panel assemblies having border strip devices 50 confronting each other the slot portions 51 of border strip 50 extend substantially the entire length of border strip 50 and receive the slot insert 32 shown in fig4 mounted to each slot insert 32 is hinging device 30 in a conventional manner thus the hinging device 30 is positioned between the confronting border strips 50 of each panel assembly as shown in fig1 a f it can be appreciated by those skilled in the art that hinging devices 30 and 31 may comprise numerous configurations which may or may not utilize the slot inserts 32 those hinging devices not utilizing slot inserts 32 would be attached directly to each border strip device 50 by screws and the like in fig5 a and 5b are shown two preferred embodiments of the bordering strip devices as mentioned above in fig5 a is shown bordering strip device 50 having a slot portion 51 a center support portion 52 and grooves 53 and 54 this particular border strip 50 is utilized on those edges of the panel assemblies which require the presence of hinging devices 30 within grooves 53 and 54 are positioned wall boards 55 and 56 respectively which form each panel assembly.