Letter Faces: Usually made from impact-modified acrylic or polycarbonate, these materials offer excellent color vibrancy, light diffusion, and resistance to various weather conditions. Letter Returns: These side components are commonly constructed from aluminum, a robust and weather-resistant material that remains rust-free and retains its appearance over time. Backing: Channel letters are often mounted on an aluminum backplate or directly onto a building’s facade. Aluminum is chosen for its strength, lightweight nature, and resistance to corrosion. Internal Lighting: LED modules are the preferred choice for illuminating channel letters due to their energy efficiency, brightness, and long lifespan. By utilizing these high-quality materials, channel letters provide a striking and durable signage solution suitable for various applications and environments.