PAR38 stands for Parabolic Aluminized Reflector, and the “38” indicates the bulb’s diameter, 3/8 eighths of an inch, or about 4.75 inches. This type of bulb is designed to produce a focused, controlled beam of light, making it ideal for floodlights, spotlights, and other directional lighting applications both indoors and outdoors.
Answer
Nov 11, 2025 - 11:34 PM
