How many bulb holder types?

        A bulb holder is a device that holds a bulb. The bulb holder types are where the bulb fits. The image below shows a bulb holder from a ceiling light. Edison screw bulb holder types: E10 Miniature (Flashlight lamp) E11 Mini-Candelabra. E12 Candelabra. E14 European. E17 Intermediate. E26 Medium. E27 Medium. […]