However, there are other-shaped bulbs that also use the E26 bulb base. You can find them on anything from wider flood lights like BR30 bulbs to vintage-look ST19 bulbs.

However, there are other-shaped bulbs that also use the E26 bulb base. You can find them on anything from wider flood lights like BR30 bulbs to vintage-look ST19 bulbs.

(19) Reflector lamps that have a first number symbol less than 16 (diameter less than 2 inches) as defined in ANSI C79.1-2002 and that do not have E26/E24, E26d, E26/50x39, E26/53x39, E29/28, E29 ...

The standard light bulb used in U.S. households is an A19 bulb with E26 base. The E means that the bulb has an Edison Screw and the 26 means the base is 26mm across (in Europe you'll find E27 bulbs).

Light bulbs come in a variety of sizes and shapes, depending on where you're using them. The standard light bulb used in U.S. households is an A19 bulb with an E26 base.