Yes when I checked out Tundra suggested I get them. Got them and I'm done.
Yes, I have attached the baby changing station liners below. https://www.etundra.com/restaurant-parts/janitorial-parts/restroom/koala-kb150-99-baby-changing-station-liners/
Yes, this horizontal changing station folds up. When closed it sticks out from the wall 3 1/4".
Yes this does close up and not in the way when not in use.