Sec 110.20 lists enclosure types. FPN describes NEMA 12 as driptight. I've seen 2 equipment enclosures this week with labels says NEMA 12 enclosure type fittings or hubs must be marked 12, 12k, or 13. I've heard of wet location ratings, raintight ratings, and concrete tight. Anyone ever seen an EMT fitting marked with a 12 ? or seen any conduit fitting manufacturer data referring to 12 rating ?