NMC OSHA signs are the perfect way to alert your employees and guests when a hazard is present in your facility. Header "CAUTION" and legend "ONLY AUTHORIZED PERSONNEL ALLOWED TO OPERATE THIS EQUIPMENT". Keep your facility safe with an OSHA regulated sign. It prevents an accident. These NMC OSHA signs comply with OSHA 29 CFR 1910.145. Rigid plastic 0.050 thick polystyrene material is ideal for long lasting indoor or outdoor use. Mounting: yes. Good chemical resistant. Maximum temperature: 183 degree F.