This is my setup for my AC in the Scamp. After alot of thought, i settled on a system where i take it in and out of the window. If you you think about 360 days a year. Even if you camp ALOT. You may actually only in the camper 20 nights a year. That is 340 other days that AC could leak around the window. Better to keep it stored inside camper till you need it and keep your windows shut.
I cut a board to fit
I built this box out of wood
I store AC under front bunk in transit
Hope this gives you ideas.q
STAY COOL MY FRIENDS!!!!