This National Marker Company sign with the legend âEXITâ is often seen in commercial and residential buildings. It clearly informs about the location of the exit doorway. The fire safety sign has green on glow yellow color to ensure clear visibility even in the dark and from a distance. It has the graphic of a man running through a door to ensure easy understandability. The material is UV resistant, chemical resistant, graffiti proof and has NMC Sign Muscle coating that protects the text against fading, scratches, scuffing, mold, and moisture.