We have a low overpass in my town we call the canopener because it's 12'8" or so and claims a ton of trucks almost one a week.
I bought an XL2 which is about a foot shorter than the H3 model of many prevosts. There's a label that says 13'6" clearance but I think we're still just under 13' with the panels. Lowest bridge we went under was 13'8" and crawled through it.
Mines mounted using door hinges on my fake awning covers then uses threaded rods in the middle connected to aluminum bars. Takes just a couple minutes to unscrew the 2 sets of bars and lift it up half at a time, then use rope to hold it open.
I'm planning on adding another 1800w on the other side but I have real awnings so need to find another way to mount the end, then some wedge to angle the panels at the right angle. I'm still thinking about making them motorized to track the sun but they work pretty well so might not be needed.
Also still working on the ACs. I have 6 of them and only 2 are working fine, about to swap out 4 of them.