Standard Lamp Bulb Size

An incandescent light bulb or standard led found in a wide range of home lighting fixtures.

Standard lamp bulb size.

Many have built in ballasts and come in standard or. From top left to bottom right. Light bulb socket sizes chart. 60 mm wide at its widest point and approximately 4 3 8 inches 110 mm in length.

Par bulb type a par lamp can be either incandescent halogen or led and has a built in reflecting surface. 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. A19 led filament bulbs in ceiling fan fixture a21 led bulbs in bedroom lamps a19 gold tint led filament bulb in porch light fixture a19 led fireworks bulbs in string lights. Although a shaped lamps are similar the difference is in size.

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. Standard arbitrary a bulbs are the most widely used and thought of when it comes to household lighting. View standard medium base bulbs. Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be.

The a19 and a21 lamps are usually blended due to their similar characteristics. 1 888 455 2800 fax 1 508 363 2900. To determine a light bulb size use the full size scale shown calibrated in eighths. 1 888 455 2800 fax 1 508 363 2900.

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 vanity lights. Cfl bulb types an energy efficient bulb. Common bulbs with e26 e27 bases. Other sizes with a data sheet in iec 60064 are a50 a55 a67 a68 a71 a75 and a80.

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. 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. An a19 light bulb is 19 eighths of an inch or 19 8 in diameter.