Light Bulb Shape And Sizes

Comparison between a15 a17 a19 a21 a23 light bulbs by their dimension.

Light bulb shape and sizes.

The code number of a bulb consists of a letter or letters followed by a number. Light bulbs also known as lamps in the industry come in a vast variety of sizes shapes and temperatures colors to allow for an array of fixtures which need different bases and other considerations. 1 888 455 2800 fax 1 508 363 2900. 3 illustrated charts showcase the 56 different types of light bulbs based on shape base and size.

So an a19 is an a shape bulb and is 2 375 inches in diameter 19 divided by 8. Find the lightbulbs shape you re looking for with this visual chart detailed illustrations of bulb shapes include a19 mr16 par and linear fluorescent tubes. In technical terms it is an a19 type bulb. Light bulbs are identified by the diameter length shape and screw type.

To help you understand what shapes and sizes you will need we have created the following guide on light bulb sizes. Numbers in a bulb code indicate size in millimeters or eighths of an inch. Common sizes of the a bulb are a15 a19 and a21. These are known as light bulb codes.

The mosts commonly used household bulb is the a 19. A normal household light bulb is on average a 60 watt light bulb. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. This is done in the form of letter followed by a number.

The letter or letters in a bulb code indicate either shape or special features such as reflector type. Bulb shapes and sizes. Every light bulb has identifying characteristics that are represented by a letter or series of letters and a number. The number designation in the code is usually the width of the bulb at its widest point designated in eighths of an inch.

As a result selecting the proper light bulb has become more like finding a needle in a haystack. Modern light bulbs are used in a variety of different fixtures and each fixture has its own unique set of requirements when it comes to the size shape and the way the light bulb projects its light.