What Is A Type A19 Light Bulb

A19 bulbs always use e26 but not vice versa according to ansi standards a19 bulbs must always use an e26 base for mounting into a light fixture.

What is a type a19 light bulb.

This is based on ansi standards imposed for bulb manufacturers in the us. Feit electric 60 watt equivalent a19 dimmable cec energy star 90 cri indoor outdoor led light bulb daylight 4 pack model om60dm 950ca 4 view the feit california compliant general purpose led bulbs. In the us a19 bulbs must always have e26 type bases. It has been used since the incandescent era and now cfl and led bulbs use the same term.

Comparing the two types of bulbs means that you need to compare the a19 vs a21 bulb shape. However not all e26 bulbs are a19 bulbs. The first letter and the two digit number. From a distance there may not seem to be any differences between the a19 vs a21 bulb.

However further examination of the bulbs will show you that there is a slight difference in the size of the bulb head. Be aware however that the opposite does not hold true. A19 light bulb base. The term a19 is used to describe the shape and general dimensions of a bulb.

A19 incandescent light bulb. E26 medium screw b. 4 10 in base type. A19 light bulb length.

To answer the question about whether a19 and e26 bulbs can be the same or not yes they can. The most commonly used a series light bulb type is an a19 bulb or its metric iec equivalent the a60 bulb which is 19 8 in 2 3 8 in. Not all e26 bulbs will be of a19. A19 and e26 refer to different things but in this case you will find that all a19 bulbs use e26 lamp bases.

That said all a19 bulbs have e26 bases so all a19 bulbs are the same as e26 bulbs.