I used this box to add a switch for recessed lighting. I originally only had 2 switches and had to add another one. I cut the drywall to fit a three piece box and was able to pull the old box out through the hole and reattach it without requiring any drywall repair. The screws are very convenient to fix this box to the stud and it is very strong. This is a great electric box and we will be buying more for the same type of modification in the future.