The AllPoints Foodservice Parts & Supplies 22-1256 Control Knob & Dial features a 2-1/2" diameter design, specifically engineered for U-series thermostats. This knob operates within a temperature range of OFF-100-450 degrees, ensuring precise control for optimal cooking performance. It is a direct replacement for Southbend part number 1020401 and is compatible with CCC item M-125 and ICS item A2656. Enhance your kitchen equipment's functionality with this reliable and durable control knob.