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Which of the following is not a requirement for a fire-rated door assembly in a commercial building?

  1. Non-combustible frame

  2. Self-closing device

  3. Labeled with a fire rating

  4. Minimum height of 2.0 meters

The correct answer is: Minimum height of 2.0 meters

A fire-rated door assembly in a commercial building requires a non-combustible frame, a self-closing device, and to be labeled with a fire rating. The minimum height of 2.0 meters is not a requirement for a fire-rated door assembly, as the height may vary depending on the specific building and its fire safety regulations. It is important to note that fire-rated doors should always meet the specific requirements and regulations of the building they are installed in, but a minimum height of 2.0 meters is not a universal requirement for all fire-rated doors.