Do pass-through windows leak?
Traditionally, truck campers have had a window that opens, usually a side-slide window, through to the truck cab. One manufacturer in particular is telling it's dealers that they stopped installing...
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My pass through window has never leaked. That includes intense rain at highway speeds 70 mph. There was one time I had very heavy winds coming at me from the side, enough that a couple semi's were blown over on the highway driving south from Twin Falls toward Las Vegas. What happened in that windy situation was my home made foam boot between the TC and cab was blowing side to side in the space between. I pulled over and fixed the problem with duct tape from the cab glass to the TC glass, holding the foam in position. Again, water has never been an issue and the cat insists on a window there.
