User:Jraff9

Electric Light bulb bases - country specific - E27(130) E14(90) E26/E27(3) GU10(106) GU5.3(12) R7S(11) MR16(52) G4(20) G5(2) G9(28) B22(6) GX53(3) G24(4) E40(5)

This is distinct from the bulb glass diameter, which in the U.S. is given in eighths of an inch, e.g., A19, MR16, T12. ... Candelabra: E12 North America, E11 in Europe. Intermediate: E17 North America, E14 (Small ES, SES) in Europe. Medium or standard: E26 (MES) in North America, E27 (ES) in Europe.