Figure 29(b) Side Wall. A 42 inches (1065 mm) minimum length grab bar is required on the side wall, spaced a maximum of 12 inches (305 mm) from the back wall and extending a minimum of 54 inches (1370 mm) from the back wall at a height of 33-36 inches (840-915 mm). The toilet paper dispenser shall be mounted below the grab bar at a minimum height of 19 inches (485 mm). The height of the toilet seat shall be 17 to 19 inches (430 - 485 mm) above the finished floor.