The Vollrath 204113 Quartz Heater Tube is a key component in Vollrath food warmers and other similar equipment that utilizes radiant heat. This tube houses a heating element, typically made of a resistance wire, encased in a protective quartz sleeve. Quartz is used due to its excellent thermal shock resistance and ability to transmit infrared heat efficiently. #204113 #Vollrat... https://partsfe.ca/204113-vollrathidea-medalie-quartz-heater-tube