NMC Bilingual OSHA sign is the perfect way to alert your employees and guests when a hazard is present in your facility. These OSHA signs comply with OSHA 29 CFR 1910.145. Legend "DANGER HIGH VOLTAGE AUTHORIZED PERSONNEL ONLY". Mounting: yes. Good chemical resistant. Maximum temperature: 183 degrees F. Measures 14-inches length by 10-inches height. Rigid plastic 0.050 thick polystyrene material is ideal for long lasting indoor or outdoor use. It is supplied with radius corners and pre-drilled corner mounting holes.