This Low Voltage Mounting Bracket is perfect for post-drywall. Simple trace the inside of the mounting bracket on your drywall, then cut the hole. Put the bracket into the hole on the wall, fold the tabs over the drywall inside the wall. Then put the screws (not provided) through the two larger holes, one in the top and one in the bottom and you are done! Easy installation. The screws will thread through the folded over tabs.