Why a PAR Bulb Behaves Like a Fixture
PAR stands for parabolic aluminized reflector, and the phrase
explains the behavior: the reflector doing the optical work is sealed
inside the lamp itself. The holder only points it, so a track head or
exterior spot changes character the moment a different PAR threads in.
That is also what separates this corner from the rest of the LED bulbs and lamps
family. An ordinary bulb glows in every direction and asks the fixture
to sort the light out, while a PAR arrives with the sorting already
done.
Choosing an LED PAR Bulb by Size, Neck, and Beam
The number after PAR is the face diameter in eighths of an inch, so a
PAR20 measures 2.5 inches across, a PAR30 3.75, and a PAR38 a full
4.75. Small faces suit tight accent cans, the mid size carries most
track duty, and the 38 handles tall ceilings and exterior work.
Damar fills the current page, and its model codes do the specifying:
PAR30s come in short neck and long neck for shallow or deep holders,
while FL, NFL, and WFL endings mark flood, narrow flood, and wide flood
beams. Tight beams stay controlled over distance for track and accent jobs, and wide ones wash a surface from close range.
One habit saves most returns: choose the beam for the throw. The
farther a lamp sits from what it lights, the narrower its beam should
be, which is why gallery ceilings run narrow while patio walls run wide.
Soft-edged BR styles are a separate family tuned for gentle indoor wash rather than control. When a trim in the recessed lighting range was designed around that softer look, follow what its label calls for instead of forcing a PAR into the role.
Outdoor Ratings, Dimming, and the Codes That Prove Them
Wet-location markings, the WL inside many Damar codes here, are what
let a lamp survive an exposed exterior holder. The classic exterior role
is the twin-head floodlight on the same walls that carry motion security lights, and the lamp's own listing has to state the rating, not the fixture around it.
Dimming gets decided lamp by lamp: a D in the code is the first clue,
the listing is the final word, and the wall side comes from the standard dimmers range. Swapping a PAR needs no license, though a new exterior holder and the circuit feeding it are electrician work.
LED PAR Bulb Questions
Do PAR bulbs fit regular sockets?
Yes, the common sizes thread into a standard E26 medium socket, the
same one an ordinary household bulb uses. The real question is
clearance, since a reflector lamp is wider and often longer than the
bulb it replaces, so check the fixture opening before the order.
What is the difference between short neck and long neck PAR30?
The face is identical; the reach is not. A short neck seats correctly
in shallow cans and compact track heads, while a long neck extends to
sit flush in deeper housings. Measure the holder depth, because the
wrong neck either protrudes or hides the beam.
Can a PAR bulb be used outside?
Only when the specific model is rated for it. Wet-location lamps
handle exposed holders and covered exteriors take damp-rated ones, and a
lamp without either rating fails early in weather. The listing carries
the rating when it exists.
Does this collection include PAR16?
The sizes visible on the current page run PAR20 through PAR38. For a
PAR16 or another size that does not surface in the grid, run the exact
code through store search or send it with a quote request rather than
substituting a larger face.
How do I pick between spot and flood?
Start from the distance and the size of the target. A far, small
target wants a narrow beam that holds together across the throw, a near,
wide surface wants flood, and anything in between is what narrow flood
exists for.
