The Southbend 1182553 griddle snap action thermostat helps maintain the desired cooking surface heat in commercial kitchen equipment. This thermostat features a 3/8" diameter by 5" sensing bulb with a 30" capillary length, allowing it to monitor surface temperature and respond quickly to heat changes. It works by automatically opening or closing the electrical circuit as the griddle reaches the set temperature, helping regulate heat output from the heating element or gas system. The result is more even cooking, reduced risk of overheating, and improved energy efficiency, making it a practical replacement part for supporting dependable daily griddle operation in busy foodservice environments.