Brady"s Alert Signs use internationally reported pictograms and helps promote greater communication of safety messages. Brady B-401 Plastic Safety Sign is a polystyrene sign panel, with protected graphics. Panels are round-cornered and punched for application to rigid surfaces. Brady B-401 signs are designed for use in light duty industrial, utility, commercial, and institutional environments. Common uses include safety signs, utility signs, information signs, and equipment warning signs. The sign construction is recommended for both indoor and outdoor use. Service temperature is -40 degree fahrenheit to 175 degree fahrenheit (-40 degree celsius to 80 degree celsius). Average outdoor durability is 3-5 years (Average expected outdoor life of product will depend on user definition of failure and climatic conditions.)