The Duke 223592 Warmer Knob provides convenient manual control for compatible commercial warming equipment. Designed for LO-HI settings, this knob mounts to the appropriate control shaft and allows operators to adjust the warmer between low and high heat levels. Its clear range supports straightforward temperature adjustment during daily operation. Replacing a worn, cracked, or missin... https://partsfe.com/knob-for-duke-part-223592