ST-524SBA has a capacity of two 10" plates. ST-536SB has a capacity of three 10" plates. 16-1/2"D x 19-1/8"W. Star-Max Heavy-Duty Cheesemelters are perfect for heating, melting, baking, finishing, warming and reheating a variety of menu items. Patented Forced Convection keeps the unit cool to the touch and extends the life of critical components. The forced convection increases productivity by re-circulating pre-heated air into the oven chamber. Quartz Infrared Heaters provide faster, more consistent heating compared to traditional heating elements.