I need to run a couple more air lines, what did you use? It has to be overhead, in order to get around a door.
OK, so I had no idea what I was doing so I got talked into this or at least the equivalent of this 10 years ago. Aluminum 3/4" or 1" pipe (I'm pretty sure it was 1") with fittings.
Made it look reeeeeeaaaallll prudy....
Edit- actually it was more like 20 years ago... damn.