Gemlite Channel Letters are the most affordable channel letter because of its low 2.5 inch profile is made from plastic. The GemLite Channel letters are available in six type styles and eight face colors. Each GemLite Channel Letter comes with an opaque white base and corresponding translucent diffusion face. The face colors have been matched to the most popular LED wavelengths. Gemlite Formed Channel letters meet all UL low voltage requirements.