What is bulb shape A19?
An A19 shaped globular bulb with an E26 base is the standard bulb that has been used in homes for the last few decades.For a chart see related links below.The A19 refers to the type of and size of the bulb base and socket. There are a myriad of different bulb shapes, but they need an A19 base to fit an A19 socket (standard light socket).