Each fire door is labeled with a permanent label that must remain legible. Fire-rated frames may have a label from a listing agency. The door and frame labels contain a wealth of information, including the manufacturer, length of time the component is designed to resist fire, whether the opening is to be equipped with fire exit hardware, and whether the door carries a temperature rise rating or is a smoke door assembly. Fire door labels usually include a number allowing manufacturers to access more information about the door’s original construction. Frame labels may state a fire resistance duration longer than that of the door. In this case, the assembly’s rating will be the lower of the two. Some hardware, such as fire exit hardware, will also be labeled, but the information on the label is typically less detailed. Fire Proof Doors : Ideal For the convenience of building occupants, how can fire doors be held open in a code-compliant manner? Fire doors must be closed dur...