Brady 58656 national fire protection association hazardous materials label, 11″w x 11″h place directly on storage tanks, processing tanks and vessels, feed hoppers, pipelines and other potentially hazardous equipment. Upper three corners of the signal rate health, fire and reactivity on a scale of 0 to 4. Lower corner gives specific hazard information. Ratings and symbols can easily be applied using our gothic style quik-align numbers and letters (sold separately). all signals meet national fire protection association’s code no. 704m and federal standard 313.graphics are permanently embedded within the sign panel, allowing for use in the most severe environments. features: excellent chemical and abrasion resistance ideal for both indoor and outdoor applications service temperature of -40f to 193f (-40c to 90c)