CAMCHILLERS ARE AN EXCELLENT WAY TO MAXIMIZE TEMPERATURE AND KEEP FOOD AT THE PROPER SERVING TEMPERATURE FOR HOURS. LAY THE CAMCHILLER FLAT AND FREEZE IT OVERNIGHT. PUT 1-2 CAMCHILLERS ONTO THE TOP RAILS AND PRE-CHILL YOUR UNIT FOR ABOUT 20 MINUTES. LOAD PANS OF PRE-CHILLED FOOD UNDERNEATH THE CAMCHILLER AND MOVE THE CAMCHILLER AND PANS DOWN AS FOOD IS REMOVED. PERFECT FOR OFF-PREMISE CATERERS AND OUTDOOR EVENTS!