DoubleLux 4ft 12 Bulb T5 Fluorescent LightThe fluorescent light has been designed for horticulture purposes, and it consists of high output bulbs and the T5 fixtures, which ensure a similar footprint. With the increase in the number of bulbs, the lumen output also increases. The lighting fixture is 4 feet long and consists of 12 X HO bulbs consisting of 4X bloom bulbs and 8 X Grow bulbs. It also comes with a 3UL listed ballast for controlling the light output. You can take complete control