Hi Everybody, Very nervous cutting a big hole in the roof of our Ram Promaster High Top Van camper conversion. Complete roof vent install here. We can't beli... I am considering adding a roof vent to my A.R.E. fiberglass truck shell. And I created this thread as a sanity check. Has anyone here done this A roof vent doesn't have that problem, and it allows the heat to escape at the apex; its hottest point the center and the top of the roof. But now we're off topic...