Standard Lamp Bulb Size

60 mm wide at its widest point and approximately 4 3 8 inches 110 mm in length.

Standard lamp bulb size.

This is the classic shape that most people are used to when shopping for a light bulb. Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be. 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. To determine a light bulb size use the full size scale shown calibrated in eighths.

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. 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. 1 888 455 2800 fax 1 508 363 2900. 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. Place edge of the light bulb to be identified on the top end of the scale and measure the approximate diameter by reading the measurement at the opposite edge of the light bulb. An incandescent light bulb or standard led found in a wide range of home lighting fixtures. Par bulb type a par lamp can be either incandescent halogen or led and has a built in reflecting surface.

An a19 light bulb is 19 eighths of an inch or 19 8 in diameter. 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 vanity lights. The a19 and a21 lamps are usually blended due to their similar characteristics.

1 888 455 2800 fax 1 508 363 2900. Light bulb socket sizes chart. View standard medium base bulbs. You can use this handy image below to identify the size of your a shaped bulb.

Other sizes with a data sheet in iec 60064 are a50 a55 a67 a68 a71 a75 and a80. Common bulbs with e26 e27 bases. Bulbs with these base types are available in many different styles. Usually both can be used for the same application but remember that the a21 is larger and may not fit on table lamps ceiling fans etc.