used to work at an industrial bakery. can confirm they are locked, only way to open is from a latch on the outside that clicks, there was about 15 ovens all the same set up. could easily fit inside one. sometimes a rack would get stuck and the door would slowly close and burn the fuck out of your arm/back. btw they stay hot if they're on. they heat up whatever temp and sit there if the doors closed, the only thing that's strange is you'd have to really shove the door to close it without being right up on it, but you could tinker with it so it shut easy idk ours were always sort of difficult to shut unless you whipped that sob. anyway rip nobody deserves that
United States