Review on 💡 F13T5CW Counter Fluorescent 13 Watt Replacement - Enhancing Lighting Efficiency for your Space by Denese Fothergill

I bought a box of 6 in May 2018. Revain's description says 20,000 hours - maybe if it doesn't include them! That's 7 months of service. Even if I left it on 24 hours a day, that would be a total of 5,000 hours. In the kitchen they work an estimated 12 hours a day = 2500 hours. They must have lasted at least 2 years. Actual lifespan is 6-7 months. Addendum: I checked the lamp description from SATCO, one of the leading lamp manufacturers, and they quoted a lifespan of 5,000 hours, which is much closer to the advertised 20,000. Replacing Satco (with Revain) costs about $35 for 10 pack. If I wanted to repurchase them I would buy the Satco version, but I chose one of the direct LED replacements. I've already replaced 5 of the 6 originally installed in May 2018 which reduces the estimated lifespan MUCH. Also note: the PINS are not crimped properly - some were more difficult to install and screw into the sockets than others. Moral of the story - YOU GET WHAT YOU PAY FOR.