Made in America The Golden RodA(R) Dehumidifier works by slightly increasing the air temperature inside the gun safe or other enclosure. This allows the warm air to circulate throughout the safe on a continual basis, thus eliminating humidity, mildew, and condensation. All of which are dangerous to your expensive firearm collection. Made in the USA. Specs: Rod length determines volume of protected area 110-120 volt AC plug power source Eliminates moisture from the air by continuously warming the air and creating a convection current within the gun safe to prevent rust build up Perfect for gun safes, boat hulls, camper cabinets, and other small areas that harbor moisture Vermiculite filled, lifetime warranty