Don't remember and is hard to get to. Was 60 inch w/2 t5 and 3 halide bulbs
+1 on sometimes difficult to get.
And running a few lights like this on a few tanks I was spending +- $600 every 6ish months not including replacing the T5 costs yearly. I did it for years until Radions came out.
Don't get me wrong, I still love them and would buy one of my old ones back from a friend I sold to.