The Stant-45356 Superstat Premium Thermostat is a top of the line thermostat that is perfect for use in high temperature, high load operation. The Superstat is 25% larger in diameter than standard thermostats, and its stainless steel flange is burnished to a bright finish for stress relief. The high venturi of the Superstat delivers maximum cooling capacity, making it an ideal choice for use in high temperature and high load applications.