Common sizes of the a bulb are a15 a19 and a21.
A19 bulb socket size.
19 refers to the size in this case 19 8 or 2 3 8 wide.
In this case an e26 bulb measures 26 millimeters sideways.
Daylight vs soft white.
108 mm max length 69 0 mm max diameter 40w type 211.
A means random just the name of the shape that most of us are familiar with.
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.
Indoor and outdoor lighting.
Other sizes with a data sheet in iec 60064 are a50 a55 a67 a68 a71 a75 and a80.
60 mm wide at its widest point and approximately 4 3 8 inches 110 mm in length.
Standard arbitrary a bulbs are the most widely used and thought of when it comes to household lighting.
112 7 mm max length 69 5 mm max diameter.
In contrast to a19 referring to bulb head size e26 refers to bulb base size the base is the part that you screw to your light socket.
The following provides dimensions of a bulb socket which is helpful if you re trying to match the socket size of a bulb you already have.
A19 refers to the shape and size of the lamp itself.
The standard dimensions of an a19 bulb are governed in north america by the ansi c79 1 standards.
E26 refers to the type and size of the base the part that enters the lamp holder.
For different bulb wattages different bulb size maximum dimensions are given.
The most commonly used a series light bulb type is the a19 bulb which is 2 3 8 inches 60 mm wide at its widest point and approximately 4 3 8 inches 110 mm in length.
A19 bulb vs e26.
The number designation in the code is usually the width of the bulb at its widest point designated in eighths of an inch.
112 7 mm max length 69 5 mm max diameter 50w type 206.
So an a19 is an a shape bulb and is 2 375 inches in diameter 19 divided by 8.
A15 a19 a21 and a25 from top left to bottom right.
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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.
You can use this handy image below to identify the size of your a shaped bulb.
This is the classic shape that most people are used to when shopping for a light bulb.