i just had to replace one of the switches that is in there now (one of my old GE z-wave switches died yesterday so i had to replace it quick even though i wasn’t ready yet to cut the box out at this point.
i’m almost wondering if i have something like this already, because it’s already a plastic box and i haven’t been able to figure out where it’s nailed in. i couldn’t see any screws from the inside, though…so i guess it has to be nailed in somehow. i just couldn’t see where…
the other interesting thing is that my current box is actually pretty deep, a little under 2.5 inches for where i could get the measuring tape in there to measure it. still not enough room to fit everything in, though. tempted to get one of the boxes you linked, but 5 gang rather than 4 (to hopefully give me a little extra room on the side as well as front to back.