Luxrite 22015 - 18w GU24 Twist T2 Daylight 6500k Fluorescent Light Bulb 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 Luxrite Twist fluorescent bulb, 18W, Base: GU24, Color Temp: 6500K, Rated Life (hours): 10000