The AllPoints Foodservice Parts & Supplies 221634 is a high-quality thermostat knob designed for precise temperature control in commercial cooking equipment. With a temperature range from low 150°F to high 400°F, this knob allows for accurate adjustments to meet various cooking needs. It features a diameter of 1-5/16 inches and a protrusion of 11/16 inches, ensuring a comfortable grip and easy operation. The notch-down design enhances compatibility with Southbend Griddle models Co300Ht, Co301Ht, and Co301Ht-94A, making it an essential replacement part for maintaining optimal performance in your kitchen equipment.