Lockdown 110 Volt 18 Inch Dehumidifier Rod - Secure Your Firearm with Confidence This Dehumidifier Rod works by slightly increasing and maintaining the air temperature inside the gun safe on a continual basis, thus eliminating humidity, mildew and condensation - all of which are dangerous to your expensive firearm collection. Type: Gun Safe / Storage Dimensions: 18 Color: Black Security: Lockable Fireproof: 18\" L Finish: Included Brackets Firearm: No