I purchase this wall plate along with a 1-gang low voltage mounting bracket and a few keystone inserts. The keystone holes are just a bit too tall for the inserts, so there is a tiny gap (sub-mm) both top and bottom. Not a big deal but not a snug fit either. On the other hand, the cylindrical "stand" where screws meet the gang plate is too tall, so there is a gap between the wall and the wall plate now, which looks sloppy.
Worked as expected. When showing the product in action everyone asked what is that? That way I was able to explain what it does and the professional appearance it gave to the system. When you live in the sticks as I do you can't just run to the store and buy what you carry. Great outlet for the products you sell.