MODEL: FK-IL20W/30W/40W/50WBULB Very good for install on the 7-9 meter Height from ground, SPECAIL FOR WAREHOUSE/FACTORY... Features: I. Use single powerful LED(50W)as the light source, using our proprietary LED encapsulation II. Utilizes the special design of multichip single module. Imported high brightness semiconductor chips. III. High heat conductivity, low luminous decay, pure light color and no ghosting. IV. Integrative design for heat sink and housing; The LED is closely connected to the surface. The heat from the LED is removed through the heat dissipation wing and also by air ventilation. This ensures 50, 000 hours life-span for the LED. If it works 11-12 hours per day, it can work over 10 years. FEATURE: Dimension: Diamater: 157 x height 230(mm) Weight: : 1.8kg Emission Color: Pure White, Warm White Luminescence Angle: 360? (H), 120 (V) LED quantity: Single powerful LED(50W) Lumens: 80LM/W Lux. At 7m: 35lux Working Voltage: 110/220VAC, Power Consumption: 20W/30W/40W/50W Lamp Base: E27/E40 Certification: CE, RoHS Warranty: 3 year.