The oven is VERY expensive for a painted metal box. I use it with a single 30K BTU burner on a camp stove. It will hold 400 degree heat with the burner on medium and works well. The latches require pot holders to use. One of mine is stripped and rotates completely around. I bought it to be used on outdoor adventures because it is big enough to be useful for pizza and a small cookie sheet for biscuits ETC. Improvements would be a spring loaded door with an heat insulated handle and a window. The box is easy to overheat and burn the paint. 500 would be the absolute max. Another reviewer had an issue with yellow powder on the door. I think the powder looking substance was caused by overheating the paint. This is NOT a porcelain coated oven it is a painted metal box that works as an oven.

Works very well, Large size will take large pans. I use it on my Ashley wood stove. Can maintain over 400 degrees if need be.