I needed a case for my supercap board. There's holes in the front for the wires to come out. There's screw holes in the side to fasten the top to the bottom. There's holes at the corners to tie wrap the case to a frame (car frame or motorcycle frame). I printed it and the board fits. I have a Honda VT750 Shadow Spirit motorcycle.

Update: I hooked up the supercap module and have been using it for about a week now and the weather has been plenty cold (35F to 40F or so). My motorcycle the lights come on bright and it spins right up, unlike before where the lights were dim and it was either barely starting or making the clicking sound without the module. The pack doesn't even get warm all. I'm using wire from an old power cord in which the copper is about 1mm thick and with the shielding is about 3mm thick and it never gets hot. I have the box located in my saddle bags. I'm pretty happy with it. I have a voltage meter from Harbor Freight and it shows around 12.2v when the motor is off and about 14.5v when the motor is on. YMMV.