Multi-deck ovens (Matador) are equipped with a specially developed circulation system and heat-resistant stones on the bottom. Thanks to this system, homogeneous heat distribution is provided to every point of the floors of the deck oven, and perfect cooking is obtained. There are very powerful steam generators on each floor to produce the desired amount. These can be opened and closed independently of each other, so that the amount of steam in each layer can be adjusted differently. This makes it possible to bake different types of cakes and similar products at the same time. In deck ovens, heat losses are prevented and energy savings are achieved by using insulation material with a high insulation value.