This is a mount to fit a ATX-PSU on a P3Steel Printer. PSU size : L140mm x H150mm x W86mm Please check if the design fits your P3Steel Printer, I have come a cross some designs, and found small differences in the measurements of the mounting holes. I added the Google sketchup file in case you want to change some stuff. Good luck!Please check if the design fits your P3Steel Printer, I have come a cross some designs, and found small differences in the measurements of the mounting holes. To assemble the mount, you will need 8 M4x20mm bolds and nuts To mount it to the P3Seel frame, 3 M4x16 bolds and nuts and 3 big washers.