Farm Innovators Heated Rubber Flat-Back Bucket Strong flexible and durable this bucket withstands cold weather cracking down to -35°F. Made from natural and recycled rubber for long-lasting durability and superior insulation at a lower wattage. It has a built-in heater that works automatically to keep water from freezing during the winter. Water will range from 50°-60° when the thermostat shuts off. Note: Using an extension cord with this bucket is NOT recommended. Features: 12-quart bucket has 70 watts of power; 18-quart bucket has 90 watts of power Thermostatically controlled Flat back for easy mounting Resists cold weather cracking down to -35° Anti-chew cord protector Measurement table in bucket UL Listed Item Specifications: Color: Black Sizes: 12-quart: 3 gallons 18-quart: 4.5 gallons Material: Rubber