These work really well to replace candelabra sockets in W**M*** ceiling fans. Yes I know they do this to limit you to 60 watts. What if you want to use spiral phosphors? Yes. This is what they mean by "risk avoidanceβ β it's always better than green. (End the rant.) In any case, the closed bottom on them is suitable for fans, lamps, or something else. The glass body is also nice and heavy. Much better than the competing style with a stamped curved bracket and exposed screws. Make sure you haveβ¦