This is a full jam shower. Most all of my showers are full jamb. They are a classic look. I also build glass block windows in my showers to allow for more light. The tile wraps into them. As you can see, I trim out the outside of my full jambs with A-106 to an A-4200, again, a classic look from the 1940's. In the 1950's and 60's they trimed the outside of the shower with an A-7250 "Box Cap" and in the 1970's the A-7250 was revamped to look like a double A-4200. I sure wish I had some of the trim the old guys used to have.