Liked the volt meter installs as posted here by Ginther on 08/05/2013:
Great looking meter, so we ordered the same exact ones. NOW - call me a chicken, but I was very hesitant to cut into a wood cabinet to mount them. So, after lots of looking, found this $5 electrical 'outlet box extension' from Lowe's
websiteIt worked - the meters snap right into the box like they were made for it!
Here's a pic of the box:
And here is one of the meters mounted in it on the wall by the entry door - I liked that location so I can look at them from just outside, and the blue color will make a cool little night light for the steps:
Didn't think the box would look good, but the obvious 'screw holes' built in along the edges give it sort of a rugged industrial look.
NOTE that I only have one meter installed in the pics. As soon as the DC meter arrives I'll snap it in below the AC meter, removing a little of the box's cross rail if / as needed.
Feel much better about not cutting them in... two little screw holes is all it took, no dremel, no hole saw. If you hesitated getting these because of cutting them in - this may be a solution for you.
Full-timer in our Bounder with Jeep Wrangler toad