2 Pack F13T5/WW 13W T5 21" Warm White 3000k Fluorescent Light Bulb 20,000hr

Works as describedNo flicker and no delay when switched onThe color temperature is was expectedThere is no noise (buzz or hum) during operationIt fit the fixture perfectly

Perfect for my light and good value

Order met or exceeded my expectations.

Soft white color is as advertised, just what I was seeking. Installed easily.

I only needed to replace one light, but was forced to purchase two. Then, this light is too bright. I ordered warm white and cool white. There was nothing warm nor cool about either. Both are bright like the sun. Warm lighting is needed and I cannot seem to find it anywhere on Amazon.I cannot comment on duration at this time, however all lights fit perfectly and lit up.

OK, I'M ADDING A NEW REVIEW TO MY ORIGINAL REVIEW (WHICH I'M NOT SURE IS FOR THIS SAME BRAND/MODEL IN MY ORIGINAL REVIEW...)Less than 1 year ago August, I ordered replacement tubes from BlueX, and the item arrived totally broken, with pieces rattling inside package. I suspect they were broken before even shipped. This meant not only did I have to reorder, but I now have this hazardous material to dispose of, and I'm home-bound, so I have to call someone from City or County to come get this junk. As far as I can remember, Amazon sent me ONE replacement, which has now burnt out less than 1 year later. I paid for 2 originally. I am not happy with this whole mess.This is my original review, which may be for a different brand/model:It's a little too early (just a few days after installing these lamps) to know if they will perform well, but so far, so good.Will update this review if they fink out on me in a short time. Am used to buying GE brand replacement lamps, and they usually last a couple years.I don't know WHY this type of lamp is made the way it is, because it takes patience and high I.Q. to psych out how to insert and remove the dang things! Once I learned the trick, I actually wrote it down on the packaging, so it will be less aggravating next time I replace the light tube: To remove, you twist the tube TOWARD YOU and PULL DOWN; to install, you push the tube AWAY FROM YOU and twist.The light seems OK; I ordered WARM and am not sure I got WARM but it's a good bright light, so that's what counts.Good luck to anybody who's also confused/mystified about how to remove/replace these tricky little fellers!UPDATE: October 2019It's been about 10 months and the light's still shining bright. :-)

After 20m years similar bulbs that were in a bathroom mirror went out within a week of each other. They were somewhat inaccessible in the mirror so I contacted the manufacturer to find out how to access them and where I could get replacement bulbs. After getting this info, they said they could sell them to me for $5 EACH. Once I opened the mirror and saw what I actually needed I ordered these for a mere fraction of the price. They are pretty bright so beware if you want something dimmer. They came quickly and well packaged. I'm happy with them.

The metal end cap holing the pins was loose of one of the bulbs. It actually still works. My previous purchase of these bulbs had one burn out after approximately six months and the second still working. That is under continuous 24 hour a day use.