This is a picture of the interior of the previous 6' scalloped, spaced picket fence. In this picture you can see the clean interior line of the fence that using galvanized, 2" x 4" brackets give you as opposed to attaching the 2" x 4" backrails to the back face of the post. As with all 5' and 6' high fencing, there are (3) - backrails to support the weight of the section as well as the pickets.