Like Rebel Hog and Strut both have mentioned. A heated rod or heat lamp is a must.Moisture in these safes can and will cause allot of damage.I use the Golden Rods in mine.They work great.Most shooter suppliers carry them at a much more reasonable price, then the safe companies offer them for.I got mine through Midshouth. Depending on the length you need they run between 25.00 and 30.00 bucks.A small investment to protect your bigger investment.

Ruger Redhawk