My trailer is setup with a storage cabinet in the front corner with a pair tool boxes mounted next to it. In the cabinet I have my pancake compressor along with a few other items. Instead of having to connect a line to the compressor and run it out one of the doors, I was thinking about putting in some piping underneath the trailer. And since in my area racing is almost at a standstill, looks like a good time to do it. I have used 1/2" Schedule 40 in my garages for years (30+) and never had any trouble with it. Garages have never been cooled or heated so I don't think temperature is a big factor. The compressor has two quick connect outlets on it so I figured I would use a short connecting hose to the piping, drop down under the floor and run to the rear of the trailer. I would bring it up in the rear corner and mount another quick connect fitting there. This way the only thing exposed would be the piping run. Anyone done the same on their trailer?