Lockdown 110 Volt 12 Inch Dehumidifier Rod - Secure Your Firearm with Confidence The GUN SAVER 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, eliminating humidity, mildew and condensation; all of which are dangerous to your expensive firearm collection. Type: Gun Safe / Storage Dimensions: 12 Color: Black Security: Lockable Firearm: No