OSHA Safety Signs

Master Lock Guardian Extreme Signs: NOTICE SIGNS Master Lock Guardian Extreme Signs give lasting performance in all weather conditions. The toughest environments call for the toughest products. Extreme Environment Signs from Master Lock deliver long lasting performance, indoors and out. Master Lock Guardian Extreme Signs can be used time and time again, because of their material. Just write on them, then use alcohol to remove writing and reuse again. Made from rugged industrial grade polypropylene, Extreme Environment Signs are designed to withstand the most demanding conditions. Throughout it all, these signs remain usable and easy to read. Master Lock's patent pending process permanently fuses the sharp, easy to read graphics permanently into the sign. Extreme Environment Signs are sold individually in one of three sizes (see below). Choose from a wide selection of safety Signs. See list below. Extreme Environment Signs are proven to last. To make sure Guardian Extreme Environment safety signs perform in the toughest applications, Master Lock subjected them to more than 4,000 hours of QUV accelerated weather testing. These Safety Signs passed with flying colors - even when subjected to more than 30 different chemicals and extreme temperatures ranging from 50 degrees below 0 all the way to 220 degrees (farenheit).