LED Standard Shape (GLS)
The GLS light bulb, sometimes known as the A-series or A60 bulb, is the most recognisable type of light bulb, as it has been in common use for over a century. GLS lamps can be found in almost every household, as they are one of the most versatile light bulbs on the market. LED GLS light bulbs are available in a range of cap types, from the standard ‘push-and-twist’ B22d bayonet cap (BC), to the E27 Edison screw (ES), and many more. GLS stands for General Lighting Service.