Step 5: Making the front panel
Wait until your neighbors are doing construction, so that you can have their carpenter come cut out holes for your outlet face. (At least that's what I did).
It's much better to cut the face too small than too large. I had to tap mine in with a hammer, and that seemed to wok very will at keeping it in.
Then, I covered the holes with tape and used liquid nail to seal in the cracks. Once it dries, I'll sand it down, and maybe paint it black like the box.