Had a random thought. When we modified a horse trailer to have the weekender package in former track area and first stall shower door was an issue. We bought a roll up door and frame, came as a unit in different sizes. It wasn't wood, wasn't a fashion statement either but did the job fine. No see thru so privacy when conducting bathroom business and kept shower water in the bath area. Simple frame installment. Probably not what you're after but like I said, random thought maybe someone else could benefit from as well.
