All ADA Signs are made to meet the specifications of the Americans with Disabilities Act. These signs have raised (tactile) letters; also known as “applique” and the equivalent raster braille. We do all the braille translations for you. Standard substrate (background) material is 1/16″ thick. (1/8″ also available) Tactile lettering is available in standard or custom (pms) colors. Applique is 1/32″ thickness above surface. Braille rasters or beads are inserted into precision drilled holes and are not removable.