The National Marker Company designed this sign to deter untrained and unauthorized people from entering a confined space. The danger signage informs individuals about the permit required to enter a specific area. It is mostly used at private properties, industrial facilities and office spaces. The sign is UV resistant, chemical resistant and graffiti proof. It has White text on a Red base and Black text on a White base in bold and legible letters to give it a better readability. The rectangular sign complies with OSHA standards and has an NMC Sign Muscle coating to protect the text against fading, scratches, scuffing, mold, and moisture. The UV-cured, clear coating creates a strong bond and also boosts the color and clarity.