Our Bullet 246RBS has a vent hood above the stove that doesn't vent to the outside of the camper. The stove area is on the slide-out. There is a Fantastic Vent in the ceiling almost right above your...
I was able to modify mine to vent outside I told my wife I'd have to buy a new one and she told me I'm smart enough to make it work. Incidentally trailer life magazine last month had an article on upgrading fans. I had boats for 20 years so the holes that really scare me are the ones BELOW the water line ;)