Hello,
I want to install a nice large box with a dual receptacle mud ring. I tried the largest plastic box which had the most cubic inch volume thinking that would work. It does, but I am not happy with it. It meets the number of conductor code, but when you add in the GFCI, it is just tight. The box in the picture gives me 50 cubic inches (nice !!). It did not have bracket like other metal boxes I have seen. Is it OK I screw this box to the stud as shown in the photo with 2 screws? I did a test install and it is definitely sturdy (even more so than the gray Slates one I tried.