Stay warm in the winter with the Royal® Ceramic Auto Fan Heater. Simply plug it into any 12-volt outlet, and enjoy instant heat with automatic temperature control and adjustable air flow in both upward and downward directions. Easy-to-operate with a fan and warmth selector switch. Simple to install, it comes complete with mounting screws and adhesive tape and a 12-volt DC power cord. Great in the car, for camping, or defrosting windows! 5 1/2"L x 3 3/4"W x 3 1/2"H.