Use an Outdoor Essentials® 5 in. x 5 in. x 7 ft. Lakewood Privacy Routed Line Post to install Pro Series 5x8 Lakewood Privacy Fence Panels. This post has routed holes. The rails from the fence panel slide into the routed holes in this post and lock into place for an easy, fastener-free post-to-rail connection. The routed holes are located on opposing sides of the post to connect fence section in a straight run.