Section 07 Plastics and articles thereof; rubber and articles thereof 39 Plastics and articles thereof 39 25 Builders' ware of plastics, not elsewhere specified or included 39 25 90 - - - Structural elements used in ceilings or roofs 39 25 90 10 - - - Structural elements used in ceilings or roofs Commodity Code Description 39 25 90 10 000 - - - Structural elements used in ceilings or roofs