With the cost of electricity so high, you should consider this money saver which operated only when you need it. Designed for the metal double wall drinkers including our hood drinkers. Also may be used with our PM drinkers. Automatically turns itself on when temperatures drop below 38 degrees and protects in temperatures as low as 10 degrees F. Includes a grounded plug and an 8 in. cord. 16 in. wide x 4 in. high. 125 watts of power.