Oster Buffet Server, Triple Tray, 2-1/2 Quart, Stainless Steel (CKSTBSTW00-NP1) Buffet server with 3 warming trays for holidays and parties Large heating surface measures 20 by 13 inches. Durable stainless steel housing Note-warming tray is not designed to keep large, deep pots full of food or liquid warm Temperature knob to adjust level of heat from low to high Cool-touch handles provide a firm grip and help prevent burns