Using this utility fence is an easy way to make sure you build the exhibit the size that you intended.  Each fence section has a purchase price of $1.  If you want one side of your exhibit to be 11 game tiles long, drop and drag this fence until the price shows $11.  Do this for all remaining sides of your exhibit.  This is a decorative fence so it is used as a template only.  You will then need to replace all sections with either the invisible fence or any other suitable exhibit fence.