The terms designate different sizes of decorative bulbs commonly used for string lights, particularly for seasonal displays. C6 bulbs are characterized by their smaller, more compact size, resembling a strawberry or small teardrop. C9 bulbs, on the other hand, are larger and rounder, providing a more prominent illumination. These lights are often selected for outlining structures, decorating trees, and creating festive ambiance.
The selection between the two bulb sizes often depends on desired aesthetic and scale of the display. Smaller bulbs offer a subtle glow, suitable for delicate outlining or creating a softer, more diffuse light effect. The larger bulbs, with their increased brightness, are well-suited for bolder statements and larger-scale installations where visibility is paramount. Traditionally, the larger size was favoured for commercial and municipal displays, while the smaller size was more common in residential settings, though these preferences are now quite varied. Each offers a unique visual impact and contributes to the overall atmosphere of the display.
