The AllPoints Foodservice Parts & Supplies 221297 is a high-quality Bj Thermostat Knob designed for precision control in commercial cooking equipment. With a diameter of 1-15/16 inches, this knob features an off-low-150-400-high temperature range, allowing for versatile temperature adjustments. It has a mounting diameter of 11/16 inches and a notch position that is oriented upwards for easy visibility and operation. The knob protrudes 1-1/8 inches, ensuring a comfortable grip for users. Compatible with Imperial Griddles and Tri-Star models TSR-RG-G, TSR-RG-GT, and TSSP, this thermostat knob is an essential replacement part for maintaining optimal cooking performance.