I set up my AR3 control panel and wiring board like an industrial control panel with DIN rails and cable guides. While doing that I had discussions with CZH labs about developing a DIN rail mount for the Teensy as I saw they had an Arduino DIN rail mount. A couple of weeks later they posted their solution. I ordered one for the Teensy and one for the Arduino. They arrived, looked great and installed easily. I have no affiliation with them other than buying their product. Just an option is anyone is looking around.