The RAB Lighting HID-50-EX39-850-BYP-PT-ECO is a 54W LED HID replacement lamp engineered for post top fixture applications with an EX39 mogul base and ballast bypass operation. It produces 7,500 lumens at 5000K with 80 CRI, running on 100277V for broad compatibility across municipal and commercial post top installations. Rated for 50,000 hours with a white finish.