are a type of 3-dimensional typeface/letter often used on storefronts and other large buildings for identification. They usually consist of an acrylic front with a contrasting trim around each letter and aluminum cans to add dimension. These can be individually mounted onto a building or, for a simpler method, mounted to a single raceway, which is then installed as one piece to the building front. Channel letters are commonly illuminated but are available in a non-illuminated style letters as well.
Channel letters are typically built out of aluminum and lit with internal neon or fluorescent lamp or contemporary LED lighting. These sign types may have an acrylic face hiding the LEDs inside. The acrylic face is usually attached to the sides of the fabricated 3-dimensional letter using trim cap or edging. Channel letters are typical for storefront, interior, and exterior identification.