The birdbath features a built-in thermostat that operates at 150 watts to prevent waters from freezing. The 120-volt heating element is located underneath the plastic basin's surface and provides warmth in temperatures as low as -20 degrees F. In hot weather, the electrical cord stores neatly underneath the basin. The simple birdbath design provides a rim designed specifically for a natural talon grip. For birdbath installation, API employs their clever EZ-Tilt-To-Clean deck rail mount. The basin attaches to the mount securely, yet tilts from a sturdy hinge to allow users to quickly dump out dirty water. The mount uses a screw clamp to grip a rail, needing no drills for application. To best attract birds, place the birdbath in a sheltered southeast location and stock with fresh water regularly. The bath measures 20 inches in diameter with a 2-inch depth. This item weighs 4-4/5 pounds upon shipping.