Fast delivery. Item as expected, well made, good quality. Keeping our feathered friends happy with a daily supply of water. Jennie W. - Erva Heated Bird Bath Customer Our Heated Bird Bath is energy efficient and money saving! It features a 60 watt heating element, and it's thermostatically controlled. The Heated Bird Bath dish is 14” in diameter and includes a deck-mounted steel ring. Please note this deck mount will fit any 2x6, 2x8 or 2x10 wood railing. It will NOT fit onto the more modern rounded metal deck railings. This Heated Bird Bath is assembled in the USA at Erva's factory in Chicago with approximately 90% domestic parts. The thermostat and heating element are the only components manufactured off shore. All other components including the flame retardant black dish, insulation, electric cord and the metal ring are made in the USA. The thermostat is set to turn the unit on at 3 degrees C (38 degrees Fahrenheit) and off once it reaches 18 degrees C (65 degrees Fahrenheit). The heater will provide water to your birds down to -28 degrees C (-20 degrees Fahrenheit).