A post must be placed at each end of every panel (or of every stack of panels). Use line posts between in-line panels for support, use corner posts when a 90° corner or a "T" joint is required. (Be sure to calculate an extra 2" of overall wall length for each post added). When a post meets an existing wall, add 1 KD115 wall bracket for proper support (fasteners are included with KD115 to mount to post, not to wall).Post caps (KD116) sold separately