Ensure precise temperature control in your water heater with the Thermodisc T-4100HL Upper Thermostat. Crafted with a durable blend of plastic and metal materials, this thermostat offers a temperature range of 90-150 degrees Fahrenheit, allowing you to customize your water heater's settings to suit your needs. The UL approval guarantees safety and reliability, making it a reliable choice for most water heaters. Upgrade your system with the Thermodisc T-4100HL Upper Thermostat for optimal performance and peace of mind.