Source for prefab wet bath enclosures?

I'm looking to add a wet bath in a new project and am looking for a prefab pan and walls (with sink?). I'm looking for something around 24"x36". Anyone have any suggestions?

I was initially going to create my own molds for a 2 piece enclosure, but I don't think that's the best use of my time or money. Times not on my side and I'll have enough other work to keep me occupied for this project.