Product details:

Double ended bulbs are known to be brighter and more efficient than standard HPS and HID bulbs, delivering an intense orange spectrum that other hps grow lights cannot match. These DE bulbs are powered from both ends for even firing and operation, resulting in even light coverage, a stronger output, and longer lifespan. With a much higher and stronger orange spectrum output, your vegging plant growth will increase and your overall flower yield from your grow room will follow. This higher caliber bulb with a higher and stronger spectrum output will increase your vegging growth and overall flower density and yield. Designed to be compatible with high-frequency electronic ballasts and double ended grow light reflectors with K12x30S lamp sockets.