This is exactly what I have had on my last two campers and soon to be on the Redwood except on long runs they out channeling. Works great! I also put 1" foam board along the inside and have 2 milk house heaters running. Last winter it hit -20 and it was 35 degrees underneath the camper. Did I mention I'm a full timer in North Dakota? That is about as hard of a winter test as it gets.