Mega Sale! Save 21% on the Satco S7339 55 Watt (250 Watt) 3700 Lumens Hi-Pro Spiral CFL Daylight White 5000K Medium Base 120 Volt Light Bulb by Satco at Those Light Signs. MPN: S7339. Hurry! Limited time offer. Offer valid only while supplies last. Fluorescent lamps are phosphorous-coated tubes filled with a low-pressure mercury vapor. Light is produced by passing an electric arc between tungsten cathodes at opposite ends of the tube. This causes the mercury vapor to generate a radiant energy.10000 Average rated hours. 55-Watt medium base. 5000K natural light bulb. Energy Saver.
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