Figure 57(a) A folding L-shaped seat is provided in a 30 in minimum by 60 inches (716 mm by 1220 mm) minimum roll-in shower stall. The seat is mounted at one end with the seat in the corner. The controls and spray unit on the back (long) wall shall be located a maximum of 27 inches (685 mm) from the side wall where the seat is attached. An L-shaped grab bar or two grab bars are installed to provide a continuous gripping surface. The grab bar(s) shall extend from the front of the seat to the shower opening on the opposite wall. A minimum 36 inch (915 mm) wide by 60 inch (1220 mm) wide clear floor space is required parallel the entire opening of the shower. A lavatory may be installed in the clear floor space across from the folding seat.