This is the wall that will be facing south. The two big openings are for modified sliding glass door panels that will be generously donated by the Foulk/Wasserman contingent for whom Kristen and I are house and dog sitting.
The one on the right (east) will be fixed in place, just like a normal window. The one on the left (west) will be a sliding door much like you’d see on a barn, with the track and pulley looking things. That way in the summer, it can be open allowing in some air, and a door to walk through. In the summer, this wall will likely face north, which is the great thing about a house that’s on wheels. You can turn it as the weather changes.