New API heated flat back buckets, 20 quart (5 gallon), model 20FB. Thermostatically controlled, 115 watts, keeps water from freezing for horses, cattle, and large dogs. Flat back hangs flush against the stall wall, and the cord tucks into the bottom compartment when not in use. I have 8 available. Pricing: 1 for $35, 2 for $65, 4 for $120, or take all 8 for $220. Porch pickup in Buford.