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Title: Performance not as rated.
Review: They do what light bulbs do; light up.They are rated for 1,500 hours. I have installed several of these bulbs in an Ikea floor lamp. They consistently break after 1-2 months. At most, I estimate these bulbs to last for no more than 350 hours. Glass goes dark, then one day they just don't light up anymore, suggesting they perhaps heat up more than they're rated for.For the price, they're not worth it. Unfortunately, I have not been able to find cheaper elsewhere, so I just bought two more. Next time, I'll probably buy a new lamp, with different kind of bulbs.
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