The Vollrath/Idea-Medalie 17074 Thermostat 1/4" X 4" Bulb 15" CAP is a precision temperature-control component engineered to maintain consistent thermal levels in commercial food warming and cooking equipment. Operating via a 1/4-inch by 4-inch liquid-filled sensing bulb and a 15-inch capillary tube, it works by detecting ambient heat variations within the unit's cabinet or water. As ... https://partsfe.ca/17074-vollrathidea-medalie-thermostat-55-14-x-4-15