The light bulb base and socket are manufactured in a way that predetermines the light bulb s position in the socket.
What base is a standard light bulb.
Click on any of the illustrations to view a list of bulbs with that light bulb base.
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For medium base ceiling fans rough service bulbs work the same way.
The extra thick filament extends the life of the bulb when used in high vibration applications such as a ceiling fan or garage door opener.
Use this handy guide to identify different types of light bulb bases that apply to incandescent halogen high intensity discharge fluorescent and led light bulbs.
Find the light bulb base type you re looking for with this visual chart detailed illustrations of general bases fluorescent bases and specialty halogen base types.
Bulbs with these bases are the most popular of all screw base bulbs.
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.
They may have a different shape from standard a shape bulbs or have a smaller candelabra base.
The first letter designates the shape or form of the base and the number represents the width of the base normally in millimeters.