Basic Fire Door Requirements

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Fire testing of doors and hardware and the resulting labeling authorities granted, is a com- ... temperature rise door meets the requirements of specifications calling for a 450 °F or 650 °F ... qualifying it as a fire door frame, it may sup-port a 3-hour, a 1-1/2-hour, a 3/4-hour, or a

  Hardware, Specification, Doors, Fire, Fire door