We recently did a bathroom door modification; making the door a sliding door rather than a swing door. We own a 2021 19ft. The reason we elected to make this change is: The swing door opened directly into the main path of the entire interior. The door was either open or closed, little option for partial venting with the door. After showering the moisture was locked into the bath behind the closed door. (This was especially true when preparing to get on the road and having to secure the door shut for travel.) A final and minor point was the swinging door was a cantilevered mass from the three small hinges.
We purchased a stainless-steel sliding door kit from Home Depot. The kit was modified by shortening the top rail bar on each end to fit the space. (Note: I did not have to redrill the existing holes as they lined up perfectly to the wall frames! We have the reinforced wall on the bath.) Shortening the standoff mounts for that rail to bring the door closer to the wall. (Note: The Home Depot kit is made for a standard width door.) Other allowances for door width included two blocks to fit between the door and the metal hangers and changing to T nuts on the back of the door to allow a close fit to the wall. The recessed pulls fit over the holes from the existing latch hardware. Finally, a magnetic closure was created to hold the door in the closed position. A lock was created from a baby drawer safety latch to hold the door open at the top and we supplement that with a plastic wedge in the bottom door guide.
We’re happy with this mod. After installing a decorative privacy shower curtain our sliding door remains open much of the time. A side benefit is that the heat and air conditioning now reach that room. On a recent trip in cooler temps the bathroom wasn’t an icebox in the middle of the night.
(Note: The child safety lock and new curtain are not yet installed in this pic.)