in the end position flange 23 extends orthogonally from the end member 22 so as to overlie at least a portion of the inner surface of the vertical wall support 20 in the preferred embodiment the flange width is made less than the stud width to enable adjacent wall covering to be affixed thereto a plurality of fasteners 21 typically nails are used to secure the flange 23 to the corresponding vertical wall support 20 also fastening means 21 are utilized along the u shaped channel members 16 in the same manner to secure the central portion of the large area panel to the associated vertical wall supports 20 a multiple hole region 18 is provided in the panel to receive commercially available fixtures if desired the top view of fig2 shows the positioning of the large area panel 11 in position against the vertical wall supports the channel members 16 surround the intermediate vertical wall supports and the vertical end members 22 are positioned against the large area surface of the end vertical wall supports as mentioned flange 23 overlies a portion of the innermost surface of the end wall support and receives fastening means 21 therein it should be noted that the channel members also are secured to the intermediate vertical wall supports the view in fig2 is taken along line 2 2 of fig1 below.