NMC OSHA signs are the perfect way to alert your employees and guests when a hazard is present in your facility. Keep your facility safe with an OSHA regulated sign. It prevents an accident. These OSHA signs comply with OSHA 29 CFR 1910.145. 0.050 thick polystyrene material is ideal for long lasting use. Measures 18-inches length by 10-inches height. Mounting: yes. Indoor/outdoor use. Good chemical resistance. Maximum temperature: 183 degrees F. Header "DANGER" and legend "Electrical hazard." with graphic.