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<br>The bulbs can overheat throughout use, posing a hearth hazard. The 120-volt LED bulbs, sold as 6- 8- and 9-watt bulbs (equivalent to 40 or 50 watts), were marketed below the brand names Definity, EcoSmart, Sylvania and Westinghouse. The model numbers A19, G25 and R20/PAR20 are found on the packaging and on the light-colored circular neck above the base of the bulb the place the date code can also be printed. The date code displays the week and year of manufacture |