Filament Types

The letters in the filament designation generally indicate whether the wire is straight or coiled, and the numbers generally indicate the arrangement of the filaments on the supports. Click on an filament image below to see an example of a light bulb which uses that paricular filament design.

C-11V
C-11V
C-13
C-13
C-17
C-17
C-2V
C-2V
C-5
C-5
C-7A
C-7A
C-8
C-8
CC-9
C-9
CC-8
CC-8