Product Details Fits our Alaska Farm Supply 100 Tub with drain plug, Behlen, Freeland, Hastings, Rubbermaid, Applegate most other plastic and metal tanks on the market. Thermostatically controlled to operate only when temperature falls below 35 degrees F Unit is unnoticed by livestock; no cord in water Easy to install and safe in plastic tanks Installs easily in minutes in any plastic or metal stock tank, including all Behlen, Freeland, Hastings, Rubbermaid and Applegate tanks Thermostatically controlled to operate only when necessary As a drain plug heater, it remains unnoticed by livestock with no cord in the water 1,500 Watts.