I plan on using this box for my basic ebrew build that will consist of 1 PID controlling two elements (one at a time) with a main power switch, e-stop, and two pumps (using only one for now). The box for the control panel (inside dimensions are 12x10x5) is shown below. I would like to start ordering pieces this week. Will I need a Din rail for this back plate? I am hoping that P-J will see this and suggest a wiring diagram.