This was my second purchase of this lamp. It was very easy to install in my unit, taking just a few minutes. The lamp can be sent and the tube was perfectly packed. My first lamp worked for a year, I could tell by seeing blue light. But reading, they say that the lamp will deteriorate in about a year. So this was my second purchase and 2 months without problems. I've noticed better UV lamps like this, prices have gone up a bit I think due to Covid. But it's not so bad to buy one a year as long…