The letter indicates the shape of the lamp and the number relates to the diameter of the lamp in eighths of an inch.
Shape lamp sizes chart.
The reference ruler at left illustrates the most commonly used household lamp an a19.
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.
Light bulbs are identified by the diameter length shape and screw type.
Learn about all the different types of light bulbs including led halogen fluorescent and more.
A different size harp or the addition of a screw on extender to the harp can help make your new shade fit even better.
The code number of a bulb consists of a letter or letters followed by a number.
The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch.
The a indicates the shape standard and the diameter would be 2 38 which is 19 eights of an inch.
Light bulb sizes and shapes chart including the different kind of light bulb bases.
The bulb is a type and the diameter would be 23 8.
Bulb shapes and sizes.
The a means arbitrary shape and the 19 means light bulb shapes types sizes identification guides and charts read more.
The mosts commonly used household bulb is the a 19.
Also don t hesitate to ask for our assistance in choosing a great looking new shade for your lamp.
If you have any questions about style size or fitter please give us a call.