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I wasn't confident that these would work so I bought regular fluorescent tubes just in case. But I like these LED guys even better. Pretty, bright light, slightly pinker cast to the fluorescent's slightly yellow. Installation is the same as the fluorescent tubes. Can't speak to the longevity because it's too soon and the fluorescent tubes last long, too. But these are on all the time, under the kitchen cabinets, so I would like to replace them even less often.
This arrived quickly. The ends are a little crude (not well finished) and the bulbs were just a hair longer than the Sylvania tubes they replaced, so I really had to work to get them inserted. However, once in, they are nice and bright. I'll report in in 20,000 hours to see if they lasted as long as predicted.
One thing, there is a dark band along on side that you'll want to rotate away from the room for maximum brightness.
Received order on 12/29/19. Of the 4 bulbs received, only 3 of 4 are still active after approx 3 month of operation. Another reviewer said warranty is only 30 days (I could not find warranty info on listing). Don't buy unless you are prepared for service life wise than the fluorescent tubes you are replacing!!
I was so excited to find affordable LED lights for under my kitchen counters. The florescent I generally use always last one year. Once installed these looked great! However, within 6 months, they were all burnt out.