Section 07 PLASTICS AND ARTICLES THEREOF; RUBBER AND ARTICLES THEREOF 39 PLASTICS AND ATRICLES THEREOF 39 25 BUILDERS'WARE OF PLASTICS, NOT ELSEWHERE SPECIFIED OR INCLUDED. 39 25 90 STRUCTURAL ELEMENTS USED IN CEILINGS OR ROOFS Commodity Code Description 39 25 90 10 STRUCTURAL ELEMENTS USED IN CEILINGS OR ROOFS 39 25 90 20 GUTTERS 39 25 90 90 OTHER BUILDERS' WARE OF PLASTICS, N.E.S/INCLUDED