Fixture housing made of round aluminum, seamlessly welded, powder coated gray, white or black. Opal lay-in cover for uniform illumination with a total light fixture efficiency over η=85%. Two cable entry points and clamp for through wiring. High efficiency LEDs with 80% lumen maintenance L 91 long life 50,000 hour. Color temperature consistency to a 3-step MacAdam ellipse in 30K, 35K or 40K. Integrated drivers with 120 / 277V input voltage with various dim options. Damp rated.