1U BUD plastic rack chassis model #PRM-14460 / PRM-14464 I goofed on measuring distance between the TRS jacks so I had to mix-and-match my TRS jacks, stick my MIDI in/out in there where two jacks couldn't squeeze in next to each other, and leave one empty hole which I might fill in with a HH pedal switch or something later. But otherwise I'm pretty satisfied with the quality of the chassis cutting.