Around the same time last year we bought the exact same pack of 12 BR30 bulbs for a pair of downlights in our basement hallway. Previous bulbs probably worked pretty much continuously for 3 years before finally blowing out, so we fully expected this box to last us the rest of our natural lives. Coincidentally, these bulbs each lasted less than a month before blowing out. After using the last one a few months ago we replaced it with some LED bulbs and haven't had any more problems. My advice is to skip them and just order acceptable quality BR30 dimmable LED bulbs.
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