Over 130 lumens per watt, DLC Premium qualified. Rated life: L70 over 100,000 hours at 40°C. Rugged and durable construction with die formed 24 gauge cold-rolled steel body. White baked acrylic paint finish. High light transmission acrylic lens, clear for maximum efficiency or frosted for visual comfort. Field replaceable Seoul LED engine and Espen driver. 120-277V (UNV) or 347V also available, 0-10V dimmable.