There are actually two panes of glass that are sandwiched in a metal frame. The inside of the new glass assembly was not clean so we had to carefully pry the frame apart so the glass could be removed for cleaning. Removing the old glass from the door is quite easy and intuitive. Just remove all the screws you see and keep them in order for reassembly. Taking pictures is always a good idea. Replacing the glass is 15-30 minutes. If you are particular about cleaning everywhere you have uncovered as we were its closer to an hour. Be patient sliding the reassembled door's hinges back into the frame of the oven for the final step. It was the most frustrating step.