Generally speaking, 12l ovens belong to mini ovens, and the actual internal dimensions are generally 26cm x 23cm, and the height is16.6cm. If imported inclined ovens are even less, they are below 24.5cm x 22cm.. 12l oven can be put into an 8-inch cake mold. Low power is below 800 watts. There are special molds for baking cakes, such as non-stick coating and anode aluminum alloy. The size and number of inches are marked on the molds, so it is easy to identify and buy them.