The AllPoints Foodservice Parts & Supplies 221177 is a high-quality thermostat knob designed for precise temperature control in commercial cooking equipment. With a diameter of 2-3/8 inches, this knob features an adjustable temperature range from Off to 150-450°F, allowing for versatile cooking options. It is designed for easy mounting with a .240-inch down configuration, ensuring a secure fit on Wells Griddle SP300 gas griddles. This durable electrical part enhances the functionality of your cooking equipment, providing reliable performance for consistent results.