i went to Hubbell's Website and Found this Neat Little Yardblaster....its a little odd but Really Cool!

it Has a Wall Mount and the Option for either Screw on or Nema Like Latch on Refractor.

also it is avalible in 9" or 12" optics as well as Dark Sky Freindly Cutoff Reflector.

see the DD Series Page on Hubbell's Website HERE!

and the PDF File HERE!

Its pretty much the same as the others from Cooper and Regent.....those stuff are also sometimes sourced....

One difference between Cooper and Hubbell is that Cooper and AE also sells REAL NEMAs so does GE...Hubbell doesn't have any of that...

I have seen real NEMAs from Hubble.  I suspect they are sourced from the same place that Cooper gets theirs.  The HPS ones have the same igniter box suspended down next to the socket.