Baumatic Megachef B620mc Built in Single Oven on Display in our Showroom…. The Baumatic Megachef B620MC Single Oven comes in a contemporary stainless steel colour. The B620MC has an efficient A energy rating. The B620MC main cavity capacity is 65 litres , which means plenty of space to cook for larger families. This oven benefits from having stay clean liners, where the Single Oven stay clean liners are activated by heat. To offer peace of mind the Baumatic B620MC built in Single Oven also comes with 2 years warranty.