Love them ajustable electrical boxes just a couple of things to watch out when attaching drywall around these adjustable boxes, mostly for you diyers. I am sure the pros know this already
1) Do not fasten (Put a drywall screw) the drywall too close to them, chances are the thick metal plate that wraps around the stud will cause a ridge in the drywall if the drywall is fasten to close to0 the box.
2) Check that the box clears the drywall (ie bring the box out slowly) and trim the drywall if it interfers with the box. Just finished painting the last room in basement and was installing the outlets. The boxes still needed to come out to sit flush with the drywall. In my haste I didnt check that the box would clear the drywall and ended up taking the top corner of the drywall out. So now I am patching and repriming and painting again…