I just recently installed a new safe, which is a new thing for me. The safe is located in downstairs area which has higher humidity and lower temp than the rest of the house. I installed a safe type heater like a golden rod and 2 eva packs. The temp in the safe stays around 74-75 degrees and the humidity 42-45 percent. I would ask some of you more knowledgeable people if this adequate or a safe level to prevent rust. I keep the guns well oiled about once a month. Thanks for any comments.