Farm Innovators Model UPH-15 Universal Drain Plug De-Icer - Fits All Tanks, 1,500-Watt Fits all metal tanks Thermostatically controlled to operate only when temperature falls below 35 degrees F Unit is unnoticed by livestock; no cord in water Easy to install Safe in plastic 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 Safe in plastic tanks 1,500 Watts