Wall mounting bracket for Verizon Quantum Gateway G1100 router

Wall mount brackets for Verizon's Quantum Gateway router seem to be hard to come by. Some say they're supposed to come with the install, but often do not. Removing the base, you can attach the router to this piece with the alignment posts and the center screw. Unlike the base, this can be mounted left- or right-facing. The wall mount slots will fit over most flat or pan head wood screws, and you can mount it sideways or upside down as well.

STL base units should be millimeters. As a check,