What Size Base Is A Standard Light Bulb

Let s talk about light bulb groups their bulb codes and what applications those bulbs are typically used for.

What size base is a standard light bulb.

Bulbs with these base types can be used interchangeably as there is only a 1 millimeter difference in base size. E17 intermediate base is in between these two sizes. You can compare most common e size designations with a thread diameter see the specific light bulb name for that size see what are the most common applications and even see the official standard for light bulbs. A15 a19 a21 and a25 from top left to bottom right.

They are commonly used for general lighting in standard light fixtures such as ceiling lights lamps can lights outdoor spotlight and flood light fixtures and. Screw in bulbs use a base called an edison screw or es base. 40w equivalent a19 led light bulb soft white 2700k ul listed e26 standard base non dimmable led light bulb 4 pack 4 7 out of 5 stars 1 773 7 59 7. The first letter designates the shape or form of the base and the number represents the width of the base normally in millimeters.

The e in the light bulb size refers to edison the inventor of the screw base light bulb and screw base light bulbs are sometimes called edison light bulbs. E26 is 26 mm and the e27 is 27 mm diameter. Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be. However an e26 bulb can fit in e27 base and an e27 bulb can fit in e26 base without problem.

E12 is the smaller candelabra base. Find the light bulb base type you re looking for with this visual chart detailed illustrations of general bases fluorescent bases and specialty halogen base types. E26 is the size of most light bulbs used in the u s. It s referred to as having a medium or standard base.

1 888 455 2800 fax 1 508 363 2900. There are four commonly used thread size groups for. Unlike the light bulb shapes the number in the light bulb base measures the light bulb base diameter in millimeters. It s used for nightlight bulbs and sometimes for decorative light bulbs used in chandeliers and over bathroom mirrors.

A further explanation of the light bulb base sizes you can look at the letter number references e12 e17 and e26 to help understand a bulbs base style and size. Or use our universal bulb finder to shop by bulb type or screw base. A19 led filament bulbs in ceiling fan fixture a21 led bulbs in bedroom lamps a19 gold tint. Bulbs with these bases are the most popular of all screw base bulbs.