NMC 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- 13,200 VOLTS". Fiberglass 0.095 material is rigid, shatter-proof and dent resistant. This material will stand up to severe outdoor weather conditions as well as weak alkalis and acids. signs are supplied with radius corners and predrilled corner mounting holes. Mounting: yes. Good chemical resistance. Maximum temperature: 220 degrees F. Measures 14-inches length by 10-inches height.