National Marker Company Sign with DANGER - HEARING PROTECTION REQUIRED IN THIS AREA Sign is designed to keep the workers and other employees aware about the potential risks of entering in a hazardous area that can lead to hearing problems. It instructs the workers to wear hearing protection while entering a certain area. The OSHA danger signage is constructed using premium-grade material that boosts the durability. The text visibility is optimum and is legible even from a distance. The fine Sign Muscle coating of over the signage helps protecting from scuffing, graffiti, pre-mature fading, and other environmental damage.