These bulbs are a lot bigger than I expected. They are about the same size as 150w incandescent bulbs. They fit a standard medium sized socket but will not work with some enclosed fixtures designed for 40/60w bulbs. They also appear brighter than the 40W equivalents, but that may be because they're transparent. I've put them in a ceiling fan with crisp, open bell-shaped bells, but they stick out and look very out of proportion. I will save them for use in frosted open cup ceiling lights as they are well constructed and bright enough to use in place of the 60w incandescent bulbs I have now. Arrived quickly with no damage, individually wrapped for easy storage. I took off one star because the size was not immediately obvious. I don't have a dimmer so I can't comment on how they fare in that regard.
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