I bought these to fit in a Edison style wrought iron table lamp that looks like a table fan. These bulbs fit perfectly and gave the fan/light the warm glow I was looking for. I used a dimmer to turn the power down a bit. These bulbs are of good construction and correct length. If you want real lighting for a room or a painting I wouldn't use them as they aren't bright enough for that. If you want a nostalgic red glow for your light fixture then this is for you. You can look at them directly without hurting your eyes. Using 5 of these in one lamp doesn't generate too much heat.