The National Marker Company sign with the legend ?FIRE DOOR - KEEP CLOSED AT ALL TIMES? is often seen in both commercial and residential buildings. It informs that the indicated fire door should always be kept closed and helps in enforcing the safety standards in the premises. The fire safety sign has an enhanced visibility in the dark. The use of clear, bold font and contrasting colors makes the sign easily visible even from the distance. The material is UV resistant, chemical resistant, graffiti proof and has AN NMC Sign Muscle coating that protects the text against fading, scratches, scuffing, mold, and moisture.