Model : Master PL-L 55W/840 4 Pin (Cool White) 4-Pin Base with a Housing Incorporating the Special Instant Starter Fluorescent Tri-Phosphor Technology Low Light Depreciation Over Lamp Life Lamp Power (W) : 55W Colour Code : 840 Watt : 55W Tube Holder : 2G11 base Lumen : 2900lm, 75lm/W