Liberty Safe 9913 Electronic Dehumidifer Rod, 12"Dehumidifier 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