30 COMBINATION WALL OVEN WITH EVEN-HEAT™ TRUE CONVECTION (LOWER OVEN) This 30 Combination Wall Oven with Even-Heat™ True Convection provides consistent heating and even cooking. A unique bow-tie shaped design and convection fan helps ensure there are no burnt edges or under cooked centers. Its upper Microwave Convection Cooking Oven combines a 900 watt microwave with a 1600 watt convection element for high speed cooking. Bold design details are the perfect balance of elegance and functionality.