I know, I know. I'll get onto picts one of these days. Promise. But yes, the corrigated in white. I think it is a bit lighter than the stuff for outside. I think the corrigations must cut down on the noise, because my father has his entire garage lined with it, and it isn't loud at all when working on stuff that would be....loud. Plus, the shiny surface really does a good job of reflecting light. I can't believe the difference really.
It's custom order, which is the only way Menards could get it. So I measured how tall I needed exactly, and ordered it that way. They are 3' wide strips. I used the hex screws in the same color. There was a little damage from shipping at one end of a few of the sheets, so I put them at the bottom where they would be behind the mill or lathe. The long sheets really are a two person job. 15' is almost impossible to handle yourself without kinking it, which would be a disaster.
I wired inside the wall, and then surface mounted the boxes. I used the cable clamps to go through the holes to keep the wires off the sharp metal. That worked pretty well. I have an outlet that ended up not near any studs, and I'm really at a loss as to how to keep it on the wall. Self tapping screws seem to pull out of the metal alone pretty easy. This is the welder outlet. I actually considered making up an extension cord, which I will need, and leaving it plugged in. Problem solved. Until the first time the cord gets pulled....Arrg! Open to suggestions. I need to finish a bit of wiring before finishing right up to the panel, but we aren't far off now. I am far from a perfectionist, but this really worked well for me. I like it.