A-series light bulbs are the classic shape most people think of when they imagine a light bulb. A-series bulbs are also known as Arbitrary, General Lamp Service (GLS), or Standard bulbs. These light bulbs are commonly available with both bayonet (B22) and screw (E27, E14) base types and have a wide variety of applications. They are most often used in the home in:

Blunt (B), Candle or Conical (C), and Candle Angular (CA) series bulbs are all light bulbs that emulate the shape of a candle flame. They are smaller in size than most other light bulb series. Each bulb has a slightly different shape—CA looks the most like a candle flame with a slightly curved tip, followed by C and B, which look more blunted and stylized. They are commonly used in:

Sometimes used interchangeably, Reflector (R) or Bulged Reflector (BR) bulbs are internally lined with a reflective material that helps project the light out of the bulb to produce a wide beam angle. They also have a flat (R) or bulged (BR) surface made up of coloured, frosted, clear, or patterned glass or plastic that helps diffuse and distribute the light more evenly.

Facts of Light: You will typically find that LED reflector bulbs don’t have a reflective material lining them. This is because LEDs are highly directive and all of the light source can be aimed outward, rather than requiring a reflective surface to bounce off of.

Reflector and Bulged Reflector series light bulbs provide a very wide beam angle, making them ideal for use in a variety of both commercial and residential settings. They are most commonly used in: