Sorry for the delay in posting these vent pictures. We didn't have the trailer on-site, it was at a dealership under lock and key. Bought a new truck and the dealership was having difficulty installing the brake controller so I brought the rig in for them to try for a 4th time. Urrrrr. Anyway, I'm digressing.
I've never posted pictures on this site, so not sure how to do it. I downloaded the pictures to flicker and called it: Escape Trailer - Bathroom Vents by Bethadrine. Then I tried to post the image, and the link, to the pictures. Please let me know if this doesn't work. (doesn't look like the image worked)
If you can enlarge the picture, you'll see the louvers in the vents. When in the trailer - the vents are not a focal point. When taking a picture of these specifically, they may look to be prominent.
Escape Trailer - Bathroom Vents - a set on Flickr