What are Channel Letters Sign Board?

Channel letters are three-dimensional, individually fabricated letters or graphics typically used for signage on building exteriors but can also be used indoors.

They’re often made from aluminum for the sides and backs, with acrylic faces, and can include internal lighting (usually LEDs) to illuminate the letters at night.

This sign type is highly visible and can be customized in size, color, and lighting effects to match a brand’s unique look.

Typical channel letters have five main components:

1. Face, often made of acrylic (or sometimes metal), is the letter’s front surface that can be illuminated or left opaque.
2. Return (sides), these vertical aluminum strips form each letter’s depth or “channel.”
3. Back, an aluminum sheet enclosing the letter’s back, supporting internal components.
4. Lighting, LED modules (though neon is sometimes used) are usually installed within the channel to illuminate the face or create a halo effect.
5. Trim Cap, a border (typically plastic or metal) that attaches the acrylic face to the returns, creating a finished edge.

6. Where You Typically See Channel Letter Signs

7. Channel letters are often installed on the building’s facade or higher up when wall space is limited. For instance, in retail areas with minimal room, pole-mounted channel letters stand tall and remain highly visible.