The 27W HyLite LED Omni-Cob is a 150W HID Replacement lamp and is an ideal solution for commercial and industrial applications. The 27W Omni-Cob lamps does not require a ballast and works on direct line voltage. With an Ultra-high efficacy of 140 lumens per watt, the 27W HyLite LED Omni-Cob saves up to 80 percent in energy. Suitable for Fully-enclosed fixtures. DLC Listed. Includes Free 20kA Surge Protection. 5000K CCT.