Dehumidifiers heat to a surface temperature of around 100-120 degrees F. The heat creates a natural convection that slowly circulates warm, dry air throughout an enclosure on a 24 hour basis. This increases the temperature of the air inside to several degrees above the ambient outside temperature. Expansion of the heated air forces the moist air outside through the small cracks on safe doors leaving the dry air inside. It is best utilized when mounting horizontally at the bottom of the safe to work effectively. The safe dehumidifier rod can be mounted against a wall as well. The safe dehumidifier rod can be mounted against a wall as well. Lowering the humidity is a slow process. Liberty Safe and Security Products, Inc. is the #1 seller of full-size residential safes in the U.S. The company offers the broadest line of home, gun, office and commercial safes available from any one company. In order to plug in this electrical DRY ROD DEHUMIDIFIER inside your safe, we recommend purchasing the ELECTRICAL OUTLET KIT. Prevent moisture and mold from entering your Liberty Safe with a gun safe dehumidifier rod. 12in Dehumidifier Rod 18in Dehumidifier Rod Add to Cart Buying Options Customer Reviews 4.7 out of 5 stars 16 4.6 out of 5 stars 527 Price $38.79$38.79 — no data Size 12in 18in Liberty Safe's market leadership is founded on high quality, innovative products offering superior fire protection, technologically advanced security, exquisite styling and functional storage capacity.