Channel letter signs project a professional image, which is why most national chains, restaurants and retailers exclusively use this type of signage. Most building and shopping center owners insist on channel letter signs for their development. Each letter, including logos, is three dimensional and individually constructed with separate illumination, providing a highly visible signage presentation. Today the standard light source is high efficiency energy saving LEDs. There are four main types of illuminated channel letters: • Standard Front Lit – Housed in an aluminum frame or letter, standard front lit channel letters are typically illuminated by internal neon tubing and have colored acrylic faces. • Reverse Halo Lit – The lighting for these halo lit letters comes from behind the letters. They are made from aluminum with the back left open to produce the halo effect. • Open Face Lit – These are essentially the same as the standard front lit, except they have clear acrylic faces to give an open appearance. • Back Lit – At the same time, these are illuminated through the back of the letter and the front face.