PAR LMAP SIZES

Lighting lamps and light bulbs are described by a shape and diameter and length designation. This normally is in the form of letter(s) followed by a number followed by an optional letter. The first letter(s) indicate the shape; the numbers indicate the diameter and the final, optional letter can designate the length.
Light bulb shape examples include: PAR for Parabolic Aluminum Reflector light bulb or T for Tube. Many household halogen light bulbs are a MR16 for Metallic Reflective.

Sizes are referenced by a number that follows the shape. In the US these numbers indicate the maximum diameter in eighths of an inch. In other parts of the world this number will designate the diameter in millimeters. An example of a US bulb is the R20, this is 20/8 or 2.5" in diameter. An example of a metric measure is the A19 which is the typical household incandescent light.

PAR light bulbs utilize a parabolic mirror or reflective surface to focus the light. For LEDs the PAR designation is used to define the shape, as most do not have a reflective lower surface due to the directive nature of LEDs.
Common PAR lamps include the PAR20, PAR30, PAR38 and PAR42, though many other sizes exist. These bulbs come in various beam angles that result in spot and flood lamps.

In Liteharbor we have PAR16 PAR20 PAR30 PAR38 lamp for your options.

Details see http://www.liteharborfactory.com/LED-bulbs/36.html