How many different bases are there...??? I just ordered bulbs with A21 bases, almost ordered the wrong size base bulbs.
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Light bulb "BASES"........????????????
- Thread starter Sourdough
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Lots and lots.
Can you be more specific? Is there something you're looking for?
Can you be more specific? Is there something you're looking for?
"HOLY TOLEDO!!! ATSA LOTTA LIGHT BULB BASES!!!" 
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A21 refers to the size/shape of an entire light bulb. An A21 bulb always has an E26 base
Waitaminute!!"HOLY TOLEDO!!! ATSA LOTTA LIGHT BULB BASES!!!"
I looked at all the bases and didn't see the one for the "3-way" bulbs that were in every living room not that many years ago.
We still have the pesky lamps for those and you have to turn the knob twice to turn on a 1-speed bulb.
So @Wingnut , you can add one more to the list:
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