Bosch wall ovens feature fast preheat time, large capacity and Genuine European Convection, which prevents odor and flavor transfer between dishes. The built-in ovens deliver safety and efficiency features, and the 30-in. models boast the largest capacity on the market (4.7 cu ft), says Bosch. A recessed top heating and concealed baking elements prevent accidental burning. EcoClean is a two-hour self-cleaning function that saves time and consumes little energy.