The National Marker Company sign with the legend âIN CASE OF FIREâ is often seen in hotels and residential buildings. It gives step-by-step instruction about the safety procedure to be followed in case of a fire hazard. This fire safety sign has the message in clear, bold letters and contrasting colors to ensure clear visibility from a distance and in most lighting conditions. The sign is UV resistant, chemical resistant and graffiti proof. It has NMC Sign Muscle coating to protect the graphic and text against fading, scratches, scuffing, mold, and moisture.