If setting up an automatic gate opener on the picket write-up, pre-drill holes to mount your brackets with the screws supplied. Then mount your brackets set up on these Middle traces, matching them to one another. Otherwise, you’ll most likely be bolting your brackets tightly to a metal gate post. https://travislswaf.blogs100.com/35298071/5-tips-about-automatic-sliding-gate-installation-you-can-use-today