Brighten up your growing game with the (4 Pack) grow light combo that takes light to the next level with the Sunblaster T5HO 39W 6400K Light Reflectors with Nanotech.This package includes (4 Pack) of 3-foot ballasts, lamps, power cords, jumper plugs, and both hanging and flat surface mounting clips. With 39 watts of power at 120 volts. You get up to 10,000 hours of 6400K light to feed your plants. The reflector prevents light loss to increase the availability of lumens by 300% and light by 48%, all while reducing heat. Light penetrates into your foliage more effectively, maximizing growth potential.The NanoTech T5 Reflectors that are included in your Combo also provide superior heat reduction by reflecting heat the was previously absorbed by the lamp and ballast into the growing area. This can help extend both lamp and ballast life.Daisy chain up to 8 units together, no matter their length, and power with a single power cord to multiply the possibility of the Sunblaster T5HO 39W 6400K Light Reflector.