This solution is used for very small letters when the standard illuminated lettering profiles cannot be used. Typically, such signs can only be viewed from close, but their short depth gives them a particularly exclusive appearance. The body of the letters is made of glued acrylic glass and the surface has a clean finish thanks to the lack of screws. The light can be directed to the front, sides, or back, as necessary. The letter depth is 30–38 mm.