This is a hot mop at a home remodel in the Los Angeles area. This shower pan is roughly the size of you standard tub. Notice the bench in this shower pan has been built to taper into the back shower wall. This is probably for two reasons: (1) to keep the shower area feeling as open as possible and (2) to make it easier to use standard size shower doors once all the tile is set. Oherwise the shower enclosure would probably have to be custom made to to fit the bench that extends all the way to the front.