The Black Lower Electric Water Heater Thermostat by Reliance is a replacement thermostat designed for 240V electric water heaters. With a sleek black color and precise dimensions of 9.00" in height, 9.1" in length, and 3.60" in width, this thermostat is a reliable and essential part for maintaining the optimal temperature in your heating system. Manufactured by STATE INDUSTRIES INC, this thermostat carries a manufacturer part number of 100108422, making it compatible with a variety of water heater models. Additionally, it comes with a warning about potential cancer and reproductive harm, ensuring users are aware of any associated health risks.