National Marker Company Sign with DANGER - RESPIRATORS REQUIRED is designed to maintain a safe environment for workers and employees. This danger sign keeps the workers aware about the hazardous area where entering without the respirators can be dangerous. It is manufactured using high-grade material that boosts the durability. The OSHA signage has simple, clear and bold text, visible from a distance and even in dull lighting. It is suitable to place in commercial premises or busy working area where respirators are required. The crystal-clear coating of Sign Muscle boosts the visibility of the text and simultaneously protects the sign from fading and other environmental damage.