50W 2800lm led ceiling panel light a, Super Thin: 13mm thickness b, High ... PF: over 0.9 c, High Efficiency: over 85% d, 2 year 50W 2800lm led ... ceiling panel light 1. Advantage: a, Super Thin: 13mm thickness ... museum, office, readig room, corridor, toilet, e, Light of Jewelry and fashion 3. Feature: Item No.IP ...