If you frequently cook two different dishes simultaneously, the Double Stack XL is for you. The oven's FlexDoor creates two separate cooking zones that can be used independently or simultaneously, and the Smart Finish with DualZone technology makes sure that foods cooking at different temperatures and times finish at the same time. The Pro Cook system automatically monitors internal temperatures so food is always cooked the way you like it. To make things even easier, the Double Stack XL offers 12 cooking functions: Air Fry, Whole Roast, Air Roast, Bake, Dehydrate, Pizza, Broil, Toast, Bagel, Keep Warm, Convection Bake and Reheat.