I finally got mine earlier this week. Will try to find the time this weekend to replace my ME150H with these. I noticed some things about the 2216nd when looking at them but I could be wrong:
Compared to the ME150h the dust cap seem a bit taller. The outer diameter seem to be slightly larger (not counting the rubber lip) and the cone is not straight sided but seems curved. More as you get closer to the spider. If some one with greater knowledge could confirm this?