Product review (5 stars): Needs a 6-1/8" hole drilled and that's seems to be the hardest to find and pretty expensive. Made do with a 6" for the ...
It all works!  Needs a 6-1/8" hole drilled and that's seems to be the hardest to find and pretty expensive.  Made do with a 6" for the wall outlet (and a file) and drilled a bunch of small holes and cut around with a saw for the rest.