Mark Knapp
Dealer - Purveyor
That sounds right. Average indoor humidity along the east coast is around 30 percent, depending on the time of year, how close you are to the actual coast, and how you heat your house/shop.I went back and looked out of curiosity and I think that number is for outdoor humidity. I have no way to figure out indoor humidity other than its high. I live in a little town called Waynesboro Georgia and yes if you leave unprotected steel in my shop it will rust, not if, but when.