I have a Propex 2211 in my Eagle Shell with the thru hull exhaust. I bought this version because it can be mounted on its side and that worked for my install.
A few notes from my experience.
-Make sure you mount in a place that you can access it. There is a reset button that you sometimes have to hit if the battery gets too low or there are other issues to trouble shoot. It's on the backside between the blue cold air intake and hot air exhaust and it still somewhat hard to access.
- I put an adhesive firewall material on the underside of the cabinet and insulated the exhaust hoses with header insulation to keep the heat down and not burn anything. it seems to help a lot. It was all purchased off Amazon and can share the links if you'd like.
- If I were to redo it, I would relocate my thermostat. It gets slightly covered by the bed and makes it slightly awkward to adjust in the middle of the night if I need too. I have also thought about either lowering the hot air outlet (vent on the right, cool air intake is on the left) or adding a tee and a second vent (louvered to close) in a lower part of the camper to keep feet warmer and allow for the air to rise.
- On really cold nights (below 20), I will take off the vent and put on this piece of ducting to focus the air to the bed, it's really nice.
Over all I have been very, very happy with my purchase and it works very well. It uses minimal propane and electricity. I have camped in -5F in it and was relatively comfortable, i wouldn't want to do it every night, but I survived. The ice/frost that builds up on the tent walls is mostly what makes it undesirable. It makes some noise, but it doesn't bother me. My wife is a very light sleeper and she hasn't said anything about it either.