This was hard to do to a new camper.
But got it installed.
I ended up having to drill the hole about 4 to 5 inches higher that where the sticker was for the vent on the inside. If you drill where the sticker is placed you will drill into where the joint is on the side of trailer when fiberglass and trim piece together.
I also put vent covers on three of the 4 covers. Would have done the 4th but the cover was missing 4 nuts to mount it. I only had to drill the vent in the kitchen/living room. The others had the hole for the mount built-in.
Also checked over all the caulking and found air bubbles over some screw heads.
So I used some eterdurabond tape to cover it.
Also put a few signs and a key rack