NMC Rigid plastic OSHA sign. 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 prevent an accident. These OSHA signs comply with OSHA 29 CFR 1910.145. Good chemical resistance. Header "CAUTION" and legend "HAZARDOUS WASTE STORAGE AREA UNAUTHORIZED PERSONS KEEP OUT". Maximum temperature: 183 degrees F. Measures 14-inches length by 10-inches height. 0.050 thick polystyrene material is ideal for long lasting indoor or outdoor use.