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