For that reason, we install our fences on 6 ft centers instead of 8 ft centers like many other fence companies. Although there is more material and labor involved in this method of installation, it makes for a much stronger fence. Our vinyl, aluminum, and chain link fences are installed using concrete on every post. Gate installation demands the most care and attention. The reason is simple. Gates are where the majority of the activity will happen. To ensure our gates have more than adequate strength and support, our vinyl fences come standard with an aluminum post stiffener for each hinge post.