I removed the door from the oven by opening the door rotating the door release catches at the hinges. You must then close the door about half way and then pull outwards on the door. I placed the door on a padded work bench and removed all of the screws around the exterior of the inner door liner. Removed the door liner by sliding it slightly towards the top of the door and lifting it straight up. This exposed the inner most glass plate which I replaced. Reinstalling the door is simply reversing the steps.