A channel letter sign is a type of illuminated sign that is commonly used for outdoor advertising and branding. The sign is made up of individual letters or characters that are typically made of metal or plastic and are hollow inside. These letters are often mounted on a wall or other surface, and are usually illuminated from the inside using LED lights.

The letters of a channel letter sign are typically custom-made to match the font and style of the business's logo or brand. They can be formed into a variety of shapes and sizes, and can be finished with a variety of colors and textures.

One of the advantages of channel letter signs is their visibility. They are typically illuminated, which makes them easy to read from a distance or in low-light conditions. They are also durable and weather-resistant, making them suitable for use in a variety of outdoor environments.

Overall, channel letter signs are a popular choice for businesses that want a professional, high-quality sign that is both eye-catching and effective at promoting their brand or message.