They attract customers, display information, and enhance brand image.
A channel letter is a three-dimensional graphic sign element. Fabricated from aluminum and illuminated with LEDs.
The most common letters are face illuminated. Alternatives are halo illuminated or a combination of both.
The color of the LEDs determine the color of the illumination. The LEDs come in all primary colors as well of RGB (Red/Green/Blue) RGB LEDs can change colors.