Identify numerical hazard ratings for health, flammability and instability with Labelmaster's NFPA® Number 4 Labels. Available in 1-, 2-, 3-, 4- or 6-in. sizes and legible from distances up to 300 feet, these self-sticking, outdoor-grade vinyl, National Fire Protection Association (NFPA) markings can be quickly applied to NFPA labels and signs. Use them to comply with NFPA 704 and communicate to emergency responders the degree of hazards associated with a chemical during a fire or spill emergency. This full line of products not only communicates potential hazards to employees and responders but provides you with the tools to help teach your workers how to use the NFPA system properly.