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GLS Lamps Bulbs ES E27
Originally developed by Thomas Edison (hence the name), The Edison Screw is a standard fitting throughout North America but is also found in many light fittings intended for use in European homes.
Often referred to by it's abbreviation of “ES”, it's also known as “E27”, with the E representing Edison and the 27 representing the diameter of the bulb cap in millimeters. The same syntax applies to E14, SES (Small Edison Screw) bulbs too.
ES GLS (General Lamp Service) bulbs are quite commonly found in many light fittings, especially outdoor lights, flush fittings and table lamps. GLS bulbs have the traditional bulb shaped glass encasing the metal filament inside.
