Brother 4in Silver Continuous UL-969 Approved LabelEngineered for the harshest industrial environments, the Brother 4in Silver Continuous UL 969 Approved Label delivers unrivaled durability and reliability for highvolume labeling tasks. This 4 inch wide silver label roll is built to endure extreme heat and exposure to acidic and alkaline chemicals, making it ideal for asset tagging, product identification, and compliance labeling in manufacturing facilities, chemical plants, and logistics hubs. UL 969