8. Buy A Single Rail: It is cheaper for the manufacturer to ship two rails with a connector plate, but it is much more difficult to install correctly compared to a single rail. Note that if your kit is much over 8 feet, it will need to be two connecting rails because carriers have limits on the length of packages they accept.
9. Spacing Hack: Need a shade more space between your door and wall? Counter sink the hanger bolt heads flush with the backside of your door to get spacing from your doorway trim.