Designed to warn employees, visitors, guests and staff members about the prohibition on the usage of cell phone in a working space, this ?WARNING ? NO CELLULAR PHONES?, rectangular sign by National Marker Company gets the point across in a bold and clear manner. The black text is printed over orange base to make the letters legible. The no cellular phone warning sign is UV-resistant, chemical resistant, graffiti proof and adheres to OSHA 29 CFR-1910.145 standards. It has pre-drilled holes on all corners to make it easy for it to be mounted. The Soft Muscle coating protects this prohibition sign from fading, scuffing, moisture, mold, and scratches. Its UV-cured, clear coating helps in creating a strong bond and also boosts the color and clarity.