I have some stuff up for grabs if anyone is interested. First off, some roof vents I am not using:
They have screens that you can pop out, as well as provisions for easily mounting a fan to them. Spin the knob and they pop up, spin it the other way and they close tight. Not the heaviest-duty plastic in the world, but stay out of baseball-sized hail storms and you should be ok. I paid 40 or 45 each for these, asking 25 each or 80 for the lot. I have 4 available, new in box. I can ship if needed.
Also, I took out 6 windows on my bus and replaced the emergency exits pop-out ones with the regular ones. So I now have 6 pop-out (top hinge) emergency exit windows if anyone wants them. Free to a good home with pickup or pay shipping.
Figured I'd post these here before I threw the vents on eBay and the windows in the trash.