I used these bulbs in a Panasonic bathroom fan/light. I'm not a fan of fluorescent lighting at all and would really like to replace my light fixture, especially as bulbs of this size/style have been hard to come by. After searching around and not finding a replacement bulb that would fit, I found them on Amazon and they were very reasonably priced. They are easy to install and I found to my surprise that these lights are much better than my previous ones and don't have that "fluorescent" look. I had to double check the box to make sure it was the correct bulb. Maybe the color is better? Also, my old lightbulbs took a while to "warm up" to get bright, and they light up the minute I flick the switch. A big improvement and I am very satisfied! The price is right, I will definitely buy more.