The AllPoints Foodservice Parts & Supplies 22-1211 Control Knob & Dial features a 2-1/2" diameter design with a temperature range of 100°F to 450°F. This durable dial is an ideal replacement for Star Mfg models 9783 and 2R-9783, ensuring compatibility and reliable performance. Designed for ease of use, it allows for precise temperature adjustments in foodservice applications.