Holds a power supply (or a similar shaped box) to a wall. Obviously you dont want it to fall! Make sure it is secure!(your safety is your responsibility) You'll have to fit it to your situation. Which is why i havent provided the .stl. To be honest, this is quite involved. pl, pt are the plank length and width respectively. If it is a general box, psl, is the length. pshf and pshb are the height front and back, not 100% if that works you could just set them the same. wd is the distance you have between the plank and the wall. dx,dz are respectively the distance of the box from the wall and plank. You can use tape when it is too big. And a file to make it bigger if too small. In some cases double-sided tape may help too. I got the location of the screws wrong! sfd and sbd are supposed to be respectively the distance of the screw holes from the back and front.