Sunlite 15W 18 inch Daylight 6500K Fluorescent Tube Bulb - F15T12/DL Fluorescent bulbs are energy saving bulbs and last up to 10 times longer than incandescent bulbs Fluorescent bulbs help you save money using 40 - 70% less energy than incandescent bulbs Fluorescent bulbs are 5-8 times more brighter (more output lumens /watt) than incandescent bulbs Sunlite fluorescent bulb, 15W, 560Lm Base: G13 2-Pin, Color Temp: 6500K, Rated Life (hours): 8,000