In my bathroom, there is a cabinet against the wall where the original light switch would be. The previous owners ran some romex through the top of the cabinet to a 2 gang box on the outside where the switches now live.
When I went to open the junction inside the cabinet I found out they had just glued the blank plate to the cabinet with some construction adhesive. And behind it, in the 4" void between the original box and the cabinet, is a mess of pigtails.
Does anyone know of a way to extend the original box or put some kind of plate on the front with a knockout so I can run the romex properly and have it contained inside of a proper enclosure? I tried one of these deep-drawn exetension rings but I couldn't find a way to attach it to the original box.