Bertazzoni MAST30WDEX 30 Inch Master Series Warming Drawer. 2.3 cu.ft. tempered glass bottom. A powerful new look. The beautifully designed Professional Series brings professional performance for your kitchen at home. Its distinctive style is characterized by elegant control knobs and ergonomically designed handles. The harmonized design allows to create vertically-stacked or horizontally-aligned walls of ovens. Build the kitchen of your dreams with freestanding ranges and built-in ovens, rangetops and cooktops, refrigerators, dishwashers, ventilation systems, all in the Professional Series style.