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5
out of 5
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"This little guy keeps the temperature inside of the safe just above the outside ambient. My humidity gauge indicates a 20 point relative humidithy difference from the inside of the safe to the outside.
Cheap insurance against rust.
Easy to install by removing the plug and threading the wire from the inside to the outside. Re-install plug and your done."
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20 of 20 people found this review helpful.
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