The lamps dim when the light is turned on. You can hardly see them at first. They take a considerable amount of time before they lighten. This is unacceptable and involves some risk. They just started to darken on startup after a few weeks of use. The lamps (Eiko) that came with our new home have lasted over 7 years of continuous use and many of them are still good. They never dim when you turn on the switch. This Circle brand does not have the same quality as Eiko. Also, these tubes don't feel like real 2700K. They appear brighter than other 2700k lamps. They may be 3100K or something, I'm not sure. Beware. Purchase at your own risk. These are not good lamps. Rather spend a little more and buy better lamps. I replace her.
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