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: -40 degree F to 175 degree F (-40 degree C to 80 degree C) Average Outdoor Durability: 3-5 years.