What's the purpose of a door? Do I really need one?

The door is a great addition to your oven for retaining heat. If you are planning on baking breads or any type of slow cooking, we would HIGHLY recommend the addition of a door. They are also great in keeping out unwanted critters like birds and mice… and especially your neighbors outdoor cat that likes to sleep in a warm oven. It’s true. We have pictures! Yuck!