There is a HUGE pile of these light fixtures at my yard at work. I know they came out of a home depot, they we dragged them to our yard. I was told it was because they cannot be thrown away, im guessing for environmental reasons i dunno. Im no light expert, but it looks like these could be used to run MH bulbs up to 400w. The ugly grey thing is a magnetic ballast attached to fixture, they have stickers on the ballasts, but they are faded and not readable. I know they worked when we aquired them and im pretty sure they run off 110v. Just thought maybe they would work for a "joe-magee" MH setup until i could afford nice set :lol:. Well if any light experts know if they would work or what i could sell a few for, let me know.