UL classified for damp environments and approved by UL for both open and totally enclosed fixtures including bollards, decorative outdoor lanterns, post top, shoe box, wall packs, and other HID fixtures. This lamp has utilizes advanced temperature control to keep LED’s cool during operation. It has a rated voltage of 120-277VAC with a luminosity of 2983.2Lmcolor temperature of 4000K.optimized heat sink, which works even in enclosed fixtures.