The PowerPlant Ultralite 400w Complete Lighting System is a very efficient complete lighting system that gives you high light output. If you’re wanting to concentrate light in a specific area, this is the system we would recommend. Benefits of the PowerPlant Ultralite 400w Complete Lighting System include: An enclosed structure to maximize light output. It is made of high quality aluminum for maximum reflectivity and the aluminum is dimpled for greater light intensity. This makes it good at dispersing heat, meaning that it can be placed close to your plants for maximum reflectivity without them getting burnt. It is super lightweight, making it easier to move around your grow room. The lamp holder is adjustable, meaning that it takes all lamp sizes and allows you to centralize all lamps so that you can get maximum light output. This product comes with a maxibright ballast.