Outdoor Essentials® 5 in. x 5 in. x 8 ft. Lakewood Privacy Fence Posts were designed specifically to work with Pro Series 6x6 and 6x8 Lakewood Privacy Fence Panels. The corner post has routed holes on adjacent sides. Use to connect fence sections at a corner. The rails from the fence panel slide into the routed holes in these posts and lock into place for an easy, fastener-free post-to-rail connection.