The flat back design and oversized metal handle allow this 20-quart bucket to hang flush against a wall. It's constructed of high-quality, resilient plastic to withstand low temperatures without cracking. Thermostatic control coupled with over-temperature protection ensures that it will keep water ice-free down to -20 degrees F. Great for both horses and large dogs. Patented design features a bottom compartment to stow the cord during summer use. The 6-foot gounded cord with anti-chew protector exits from the bottom of the bucket to prevent chewing. Thermostatically controlled for efficient operation.