Bulb Identifier

Light Bulb Identifier

Established 1989 - Special Orders and Shipping - Family and Woman Owned

Bulb Size Reference

Sunlan Lighting Inc. wants you to know that lamp size is determined by the maximum diameter expressed in eighths of an inch (1/8"). For example, an A19 lamp is 19-eighths of an inch or 2 3/8" in diameter. To determine a lamp size, use the full-size scale shown below (calibrated in eighths). Place one edge of the lamp to be identified on the top edge of the scale and measure the approximate diameter by reading the scale at the opposite edge of the lamp. Sizes of the more popular lamp types are indicated on the scale.

We Ship Unique Light Bulbs

Call us today.

(503) 281-0453

Sunlan is always the best! I needed 12 unique bulbs for our new light and didn’t know the size. I received such great help in finding exactly what I needed. Wonderful shop and we are so so happy with our light :)

- Taylor M.

Lamp Size (Shown in Actual Size)

Lamp size is determined by the maximum diameter expressed in eighths of an inch (1/8’). For example, an A19 lamp is 19-eighths of an inch or 2 3/8’ in diameter. To determine a lamp size, use the full-size scale shown below (calibrated in eighths). Place one edge of the lamp to be identified on the top edge of the scale and measure the approximate diameter by reading the scale at the opposite edge of the lamp. Sizes of the more popular lamp types are indicated on the scale.

Kelvin Color Temperature

LED Retro-Fit Bulb Shapes

LED lamps are available to replace fluorescent tubes/lamps in the same fixture.

The size and shape of a bulb are designated by a letter code followed by a number. The letter indicates the shape of the bulb, and the number indicates the diameter in eighths of an inch.