What does PAR mean?
PAR lamps are directional reflector lamps. The number in a PAR designation relates to lamp diameter in eighths of an inch, so the designation is useful when comparing physical size.
PAR20 vs PAR30 vs PAR38
PAR20 is the smaller format, PAR30 is larger, and PAR38 is larger again. Physical size is only one part of replacement selection: base type, voltage, beam angle, lumen output, color temperature, dimming, and fixture fit must also be verified.
Do not substitute by size alone: two PAR lamps of the same nominal size can have very different beam angles, lumen output, electrical requirements, and application ratings.
Replacement checklist
- PAR size
- Base type
- Voltage
- Wattage
- Lumens
- Beam angle
- Color temperature
- Dimmable / non-dimmable
- Wet or damp location requirements
TECHNICAL CONTENTPrepared for practical product selection
Bright Concepts Lighting organizes manufacturer specifications and supplier product data to help commercial buyers identify and compare lighting products. Always verify the manufacturer documentation and project requirements before installation or substitution.