Patent ID: 8272180

Claim:
A system for comprising: first and second perpendicularly disposed wall panels; a top cap disposed on top of the first wall panel, the top cap including a plurality of downwardly extending flanges defining a center channel, first and second downward-opening side channels spaced outward of the center channel, and a pair of the lateral edge walls, wherein the center channel is adapted to receive a fastener for attachment to the first wall panel, the top cap defining a length and the pair of lateral edge walls extending along the length; and an upper bracket including a guide rail extending lengthwise along the upper bracket, the upper bracket slidably interfitted interfit with at least one of the side channels, the upper bracket including an upper plate extending laterally outward of the guide rail and including a through-hole for alignment with a corresponding through-hole in the second wall panel, wherein the guide rail is slidable in a first direction along the length of the top cap and wherein the upper plate extends horizontally beyond one of the lateral edge walls of the top cap a second direction perpendicular to the first direction to overlie a portion of the second wall panel.