SATCO NUVO's LED HID Replacement Lamps are an energy efficient alternative to traditional HID lamps. Offered in a field selectable ED28 model or CCT selectable in ED28 and ED37 models. Designed for use in type B ballast bypass applications, these lamps make the transition to LED lamps easy. Enjoy long-lasting and low-maintenance lighting in warehouses, post top and area lights, gymnasiums and more.