Products that provide fire protection for computer media are listed on this website with the designation of “Class 125.” Tests for products designed to protect computer media range from 60 to 120 minutes in furnace-burn time, at temperatures ranging from 1700°F to 1859°F. By comparison, a typical fire lasts 20 minutes and reaches 800°F. During the fire test, the internal temperature of the product is monitored to ensure that it does not rise above a level that would endanger the computer media stored within the product. The designation tag also indicates the length of the fire test as “1 HR, 1 ½ HR, or 2 HR" and is located next to each model number.