A novel joint is used to join panels of a trailer wall. The joint is formed by joining to two composite panels joined together. Each panel is formed from inner and outer skins and a core therebetween. At least a portion of the ends of the panels are spaced apart from each other to define a gap therebetween. A member is attached to the inner skin of at least one of the panels and has a plurality of slots provided therethrough which are aligned with the gap for attachment of items to the wall. Structure is provided to join the panels together along the outer skins. In most embodiments, a portion of one panel's inner skin overlaps the member and has a plurality of slots therethrough which align with the slots provided through the member. In these, the member acts as a doubler to reinforce the slots provided through the overlapping portion. In one embodiment, the member is attached to the inner skins of the panels and acts as a logistics plate. The member may be seated against a stepped end portion of at least one of the panels or may have rolled edges which seat in indentations formed in the panel inner skins. The joining structure may be formed by a portion of one panel's outer skin overlapping the other panel's outer skin and being attached thereto. The overlapping portion may have a bulging section along the length thereof which aligns with the gap between the panels.
