Diamond lights
Our 4x8 Diamond lights each utilize (2) 8 foot, 2 bulb standard light fixtures. The rigid fixtures make up the 'length-wise' structure of the light, with 2 cross supports screwed to them for the side to side support, which have the decorative sides screwed to them. Any rigid, 2 bulb, 8 foot shop lights would work including the low energy ones, which unfortunately, my 10 year old ones don't have. Not sure what you're after exactly, but I can take pics of these if it would help. You can use whatever bulb you wish. We use daylight 6500k in ours. The ballast will depend on which bulb STYLE you use, the bigger older ones, or the newer, smaller ones.