Standard Light Bulb Base Types

Unlike the light bulb shapes the number in the light bulb base measures the light bulb base diameter in millimeters.

Standard light bulb base types.

The e in the light bulb size refers to edison the inventor of the screw base light bulb and screw base light bulbs are sometimes called edison light bulbs. 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. 99 3 17 bulb 19 99 19 99. Common bulbs with e26.

Medium standard base code. Bulbs with these bases are the most popular of all screw base bulbs. Look at your fixture to determine its base type. Most common light bulb uses including lamps recessed flush mount flood lights are going to have one of the first three base types shown above.

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. Dimmable led edison light bulb g25 globe shape clear glass 40 watt equivalent 2700k soft white e26 standard base ul listed 6 pack 4 7 out of 5 stars 1 119 18 99 18. Pin type bases are normally used for track lighting landscape bulbs. The candelabra e12 has a diameter of 12 millimeters.

Click on any of the illustrations to view a list of bulbs with that light bulb base.