What is the difference between e26 and a19

How can an A19 bulb possibly be the same as an E26 bulb but also be different? Is an A19 bulb same as E26 or not? A19 actually refers to the bulb head size. An a19 bulb size would typically have dimensions of about 2.

In some countries, they are known as A60 bulbs because they decide to use the millimeter measurement for determining labels instead. See on Amazon. In contrast to A19 referring to bulb head size, E26 refers to bulb base size the base is the part that you screw to your light socket. The E stands for Edison and the number refers to how many millimeters the base measures horizontally.

In this case, an E26 bulb measures 26 millimeters sideways. In the US, A19 bulbs must always have E26 type bases. That said, all A19 bulbs have E26 bases so all A19 bulbs are the same as E26 bulbs.

However, not all E26 bulbs are A19 bulbs. While A19 bulbs are required to use E26 bulb bases, not all E26 bases are required to use A19 bulb heads. Great explanation, but could you list the exceptions? What other bulbs, besides A19, use an E26 base Hi Kevin! Thank you for the feedback and follow-up questions. Many light bub shapes and sizes utilize the medium, standard base - including many LED bulbs. Hi there! I would like to ask you a question.

I just bought a small ceiling fan that takes an A15 bulb. I understand that A15 is not available as a smart bulb. I am wondering if you can substitute an A19 smart bulb for an A15 as long as they both have the same base size? Thanks in advance for your input!

There would be two things to consider if you want to do this. Will the A19 bulb fit into the fixture? A19s are slightly larger than A15 bulbs. Will the fixture be able to support the wattage of the A19 bulb? If both of these are a "yes", you should be okay to use the A19 bulb in your new ceiling fan. Hope this helps! If you have further questions, feel free to give our Customer Service team a call at This was a really great explanation!

Short, through and super clear. Thank you:. When discussing the A19 E26 bulbs, is there a code for different lengths top to bottom of the bulbs? I have bathroom fixtures in two bathrooms that use A19 E26 bulbs that are slightly shorter than standard bulbs and one of these is slightly shorter than the other.

Is there a length chart with different codes for these? Hi John - Unfortunately, A19 bulbs do not have a "standard" length. English General. Also Read How often should I use Maxi climber? Also Read Comment conserver un avocat plus longtemps?

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