I am building out a Delica L400 with the crystalite roof. The roof of this van does not have enough space between the glass roof panels to fit a 1lstamdard 14x14 roof fan or even some of the smaller 11x11 ones. I've got 9in max and I want to mount one at the front of my van where I will cook in the winter and one at the back where I will sleep.
I have been looking at the maxxfan dome fans since those are just over 6in mounting.