NMC OSHA sign is the perfect way to alert your employees and guests when a hazard is present in your facility. Keep your facility safe, buy an OSHA regulated sign today and prevent an accident tomorrow. These OSHA signs comply with OSHA 29 CFR 1910. 145. Made of 0.050 thick polystyrene material. 0.050 thick Polystyrene material is ideal for long lasting indoor and outdoor use. Mounting: yes. Good chemical resistant. Temperature resistance: 183 degrees F. Measures 10-inches length by 7-inches height. Header "SAFETY FIRST" and legend "KEEP THIS PLANT SAFE AND CLEAN".