Be prepared when your lamp goes out with the Ott-Lite Replacement Bulb. This package contains a replacement light for TC10016, TC10018 and TC10471 lamps. This bulb provides bright and reliable lighting for your home or office to help you read, write or simply relax. Use this 18 watt bulb for a comfortable light source. With OttLite Natural Daylight Illumination you can see details clearly so you can do what you love, longer.