Helps prevent water from freezing in temperatures as low as 10F. Designed for use with double wall founts and other metal containers. Perfect for outdoor use in a dry, sheltered area. Cord should be protected from animals. Electric Heat Base for use with only metal founts.
I use this for a metal food dish, filled with either fermented or wet mash, or cooked cabbage, or anything else they don't eat right away before single digit temps would freeze. A great purchase for the 2017-2018 big chill.