I created this rack ear as I had a vision of building a small desktop 10" rack for my church's PSM300 IEM transmitters.  These come with ears one long one short that will make this 8.5" module fit in a 19" standard rack.  While I have a standard rack in the booth at church it is full and I needed a short term solution while we work on building a new sanctuary.  I found another set of ears out there but they were too narrow and didn't fit a standard 10" rack.  This is my very first model that I have made, but it turned out fantastic.  The only thing I would possibly update is the chamfer on the pack mounts could be deeper as the screws don't quite sit flush, depending on the rack you choose this may not be an issue. but I had to skip one hole in my rack after about 3 units because it was getting too tight to hit the rack screw holes.