Used HydroFarm Halide Grow Light Hood with Bulb!! Tested and working. You don't need the Ballast for this light, it just plugs straight into the wall! Measures about 20”x16”. This is used, so it does have some cosmetic flaws, but that doesn’t impact how well it works! This is very bulky and pretty heavy, so if you are nearby, come get it local pick up in Fort Wayne, IN to save yourself from shipping costs!