Lamp Guide: General Information

Maximum Overall Length (in inches)- includes the sockets for
incandescent bulbs and pins for fluorescent bulbs (MOL).
Lamp Diameter – Lamp diameter is expressed in eighths of
an inch (1/8″). For example: an A21 bulb is 21 – eighths of an
inch or 2 5/8″ in diameter at it’s maximum dimension
(DIA).
Beam Spread Legend-
(NSP – NARROW SPOT) (SP – SPOT) (NFL – NARROW
FLOOD) (FL – FLOOD)

Incandescent	HID	Compact Fluorescent	Fluorescent
DIAMOL	DIA MOL	MOL	Nominal Length is the dimension from back of socket to back of socket