Electric Heater Base,125 Watt, helps prevent water from freezing in temperatures as low as 10 degrees F. Designed for use with Little Giant Double Wall Founts and other all-metal containers. Perfect for unheated coops and barns; can be used outdoors in a dry, sheltered area. Made of heavy-duty, rust-resistant galvanized steel. Cord should be protected from animals and used with a ground-fault-protected outlet. Unit will not draw electricity until temperature drops below freezing. Uses less than 1 amp per hour. 16.5 inch diameter by 3.687 inch high.