Brady 118253 10" Width x 7" Height B-558 Pressure Sensitive, Blue And Black On White Color Sustainable Safety Sign, Legend "Notice Keep All Cylinders Chained" Brady B-558 permanent cold temperature applicable pressure sensitive acrylic signs are made of 24% pre-consumer waste Use in applications where sustainability is a concern Minimum application temperature: 0 degrees F (-18 degrees C) Service temperature: -40 degrees F to 230 degrees F (-40 degree C to 110 degree C) Average outdoor durability: 3-5 years