LED technology is firmly established in the lighting market due to its excellent results in duration, consumption and low voltage. IRPEN has developed a specific quality of its plates Cast Methacrylate (Polycyril) that make it possible to get the most out of this technology, especially in the execution of corporeal letters. Until now IRPEN has developed various white colors in this specialty such as 120120, which offers a higher light transmission than standard quality. We have recently added another reference to our catalog in LED quality is white 120129, in thickness 30 mm, which fully meets the needs of the signage market.With the new white 120129, special for LED lighting, we obtain optimal results in the creation of body letters thanks to their optical properties and above all in the high diffusion of light, thus guaranteeing maximum light efficiency. To these characteristics, the Policril PO 01 LED color plate 120129, adds the possibility of incorporate LED lighting inside the material or on its back, resulting in the case of corporeal letters, a powerful image with uniform lighting. As it has a higher opacity (see table below), the new 120129 prevents the LEDs from being visible and the formation of shadows, as a result we obtain homogeneously illuminated images. In the following table we can find a comparison of the factor that characterizes this material, the light transmission and that will help us to choose according to the needs of the project.