That would work.. I had a similar setup in my trailer with the FEC and I had a ramp door. I put the smoker against the ramp door with the exhaust going straight through the wall and out. But since you want the smoker against the side wall of the trailer, another elbow and straight portion could be added to your current setup to go horizontal to the wall and then through the side and out. It's up to you where you want to exhaust the smoke (top or side) - just throwing some suggestions before you start cutting holes in your trailer.