Ok- here you go Billy!
Have not had a problem at all in over 60K miles towing our 21 with thermal sliders. I do remember our 2010 17B with single pane windows had window locks that sometimes were difficult to unlock as the latches were pull outward to the left vs. slide upward.
We have driven over a lot of dirt roads, including 25 miles on a rutted Soda Lake Rd. from CA 166 to Carrizo Plain, which was a big mistake...should have taken Hwy 58 from Santa Margarita. Anyway, both doors of the fridge came off, however windows were as always closed.
"We gotta get as far away as we can!"
- Russell Casse, Independence Day