Brady B30C-4000-584-SL 50' Length x 4.000" Width, B-584 Reflective, Silver BBP31 Retro Tape Brady B-584 is used in applications such as outdoor pole and pedestal identification and indoor long distance scanning of racks and shelves where high visibility is critical Retroreflective sheeting: Type 1 (Federal Specification L-S-300) Pressure sensitive acrylic: Class 1 (Federal Specification L-S-300) Recommended standard legend colors are black, white, red, green, blue, yellow, magenta and cyan 4-6 years (Average expected outdoor life of product will depend on user definition of failure, climatic conditions and mounting techniques)