Identify Your Current Bulbs
A Series

A Series are standard, pear shaped bulbs, and are most commonly used for general household applications.
B & CA Series

Typically used with chandeliers and are decoratively shaped as Candle flames (CA), or Bombs (B - oval shaped). These can also be referred to as Torpedo Tip - TT (see B-10) or Flame Tip - FT (See CA-9.5).
BR Series

BR series, which stands for Bulged Reflector, is similar to the R shape with the addition of a bulged end.
C Series

Cone shaped bulbs, sometimes used for night lights and other small fixtures.
F Series

Also known as Fiesta or Flame bulbs, are similar to B series but have decorative additions of ridges and color.
G Series

G series are Globe shaped, and are commonly found on most bath vanity fixtures.
MR Series

Multifaceted Reflectors, is similar to PAR series but incorporate a multifaceted-mirrored surface, which creates a higher intensity light output, often used in track and spot lighting.
P and PS Series

P and PS series are shaped similar to A series, but are used in high wattage fixtures requiring over 200 watts.
PAR Series

PAR series which stands for Parabolic Aluminized Reflector, is similar to the R shape, but provides halogen lighting and is more efficient than R lamps. PAR bulbs are also weatherproof and can be used in more locations than R or BR lamps.
S Series

Straight sided bulbs most commonly used in signage and specialty or indicator applications (often in vehicles).
R Series

Reflector bulbs, which incorporate a mirrored coating on the back of the bulb to aim light forward, are most commonly used for floodlights, spotlights, and track or recessed lighting for directional illumination.
T Series

Tubular bulbs, often used in picture lighting, piano lamps, and other long fixtures.