The very large channel letters, made with a vinyl face, are protected from the weather and look perfect. The vinyl, stretched on the face of the channel letters, tightly adheres to the profiles, which does not allow moisture, dust, and wind to penetrate. In this way, the entire front part is insulated. Aluminum profiles are also protected. The back of the channel letters is an aluminum sheet, which is attached to the profile in special grooves and a is obtained a complete.