This safe keeps the interior humidity above 80% regardless of where you keep it. In other words, within weeks or months, everything you place in the safe will be damp, moldy, and in many cases ruined. In other words, this safe not only DOESN'T protect your documents from the elements, it actually CAUSES the damage itself. Again, I cannot stress this enough - DO NOT PUT ANYTHING OF VALUE IN THIS SAFE (which yes, defeats the entire purpose of a safe. So don't buy this one.)