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These bulbs are advertised as "Warm". They are in fact "Cool". The bulbs are fine if you want a cool colour tone. Customer support from the seller has been disrespectful. This company is garbage. I feel sad.
I ordered this pack of two sixteen months ago to replace one burned out under-cabinet light tube, so we had an extra. The one we installed in March 2020 has now burned out. If you do the math, 20,000 hours would mean that tube was on for 41.6 hours per day. In reality we use those lights around four hours per day, so the amount of time this lasted was less than 2,000 hours. DO NOT BUY unless you like wasting money and adding mercury to the environment On our way now to the local big box to dump the pathetic burned out tube in recycling. It will be interesting to see whether the second tube has the same horrible performance. Will update if it only lasts 2,000 hours as well.
The description states the approximate lifespan of this bulb is 20,000 hours. One of the bulbs burned out after less than 4000 hours and the other bulb from the two pack is now flickering. I wouldn't buy these again. In the long run these were pricey because of their really short life span. In addition I now have to waste time researching for a replacement bulb AGAIN and now have added to my "to do list" as these require special disposal .
Each of these two tubes lasted about six months. I'm guessing I used them two or three hours a day. But even if I had used them ten hours a day (which I never did) that would have come to less than 2000 hours. Oh well.
My original bulb that came with the fixture lasted over 10 years and was on constantly. I bought this 2 pack thinking they would last me for a while. Well 10 months later both bulbs have gone belly up. These are probably designed to fail early. Would look elsewhere for a better product made with better standards of manufacturing.