E12, E14, E26, E27, E40 and other names a great "E" accompanied by a number are all Edison screw lamp owners. Certainly, E represents Edison, historical past of the of idea man who invented incandescent bulb. E27 is commonly used in domestic lighting - incandescent light bulbs. E14 features smaller size than that E27, depth of this size of E40 is larger than that of E27.


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