What information is NOT required to be labeled on fire retardant treated lumber?

The labeling requirements for fire retardant treated lumber are established to ensure safety and compliance with relevant building codes. Among the required information, the name of the mill that cut the lumber is not necessary for the label. This is because the focus is primarily on the treatment and its effectiveness rather than the origin of the lumber itself. The type of treatment used, year of treatment, and fire-retardant rating are critical pieces of information that inform builders and inspectors about the fire performance characteristics of the lumber, ensuring it meets the required standards for safety in construction. Therefore, while tracking the origin can have its importance in quality control, it is not mandated as part of the essential labeling for fire retardant treated lumber.