The Garland 224022 BJ Thermostat Knob is a temperature adjustment control used on compatible commercial cooking equipment. It fits onto the thermostat shaft and allows the operator to select temperature settings from OFF through LOW up to 500 °F by rotating the knob to the desired position. With a 1-15/16″ diameter and specified mounting dimensions, it provides the correct fit and control range for appliances that use this configuration. Installed on ovens, ranges or broilers, the knob serves as the user interface for adjusting heat, translating user input into the thermostat’s setting for the appliance’s temperature control system.