I ordered two seals and installed them. The door gasket was very easy but the lower seal was a lot of work. I had to disconnect the water supply and pull the dishwasher out of the cabinet in order to remove the side panels. This allowed me to disconnect the door springs. I then had to disassemble the door and remove it from the hinges. The process was not intuitive but there were online videos that helped to know the sequence of removing the door. The old seals did not look very bad but they were 20 years old. So far, the door is no longer leaking.