Philips Lighting 423087 T12-6U U-Bent High CRI Fluorescent Lamp 40 Watt 2-Pin G13 Base 1955 Lumens 90 CRI 4100K 22.44 Inch Length Cool White Supreme 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 Philips U-Tube fluorescent bulb, 40W, Base: 2-Pin, Color Temp: 4100K, Rated Life (hours): 18000