Professional farm grade electric heater base helps prevent water from freezing at temperatures as low as 10°F. Allows for year round water supply for poultry. Thermostat control turns on and off for economical operation. Will not draw electricity until temperature drops below freezing. Perfect for unheated coops and barns; can be used outdoors in a dry sheltered area. Made of heavy duty, rust resistant galvanized steel. Fully assembled and ready to use, just plug it in. 125 watts, 110V heating element uses less than 1 amp per hour. Measures 16.5 diameter x 3.687H with 8 , 3-prong grounded cord. Cord should be protected from animals and used with a ground fault protected outlet. Designed for use with Galvanized Double Wall Founts, and other all-metal founts, bowls and pans.