The Robertshaw Water Heater Thermostat (Model 110-202) is a premium solution designed for efficient and reliable temperature control in natural gas water heaters. With a robust 1-3/8" shank and a heat output of 48,000 BTUs, this thermostat ensures consistent performance for indoor installations. Engineered with precision and crafted by the trusted Robertshaw brand, it offers dependable functionality, making it an essential component for maintaining optimal water heating efficiency.