Here I am looking for new T5 bulbs for base cabinet lighting. It feels like I did it just a few months ago. Oh wait I did. Only now, looking through my purchase history, do I understand that I bought this particular lamp set twice. Once in September 2018, again in August 2019. And now they are going extinct again in April 2020. Even without doing the math, there are only 8760 hours in a calendar year, that's nowhere near the 20,000 hours they claim, and that's assuming they were on 100% of the time. Learn from me and stay away. This is not the last. hp If you order them, expect the box to be crushed. It happened both times.