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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Acrylic staple fibers (polyacrylonitrile staple) containing 85 percent or more by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, colored, crimped, with a decitex between 1.98 and 2.42 and fiber length between 40 and 47.5 mm, certified by the importer as having a solar reflectance index greater than 30 (provided for in subheading 5503.30.00)................................................................................... 1/ 9902.13.15 On or before 12/31/2020 No change No change Free 1/ Acrylic staple fibers (polyacrylonitrile staple) containing 85 percent or more by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, colored, crimped, with a decitex between 1.98 and 2.42 and fiber length between 48 and 60 mm, certified by the importer as having a solar reflectance index less than 10 (provided for in subheading 5503.30.00)................................................................................... 1/ 9902.13.16 On or before 12/31/2020 No change No change Free 1/ Acrylic staple fibers (polyacrylonitrile staple) containing 85 percent or more by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, colored, crimped, with a decitex between 1.98 and 2.42 and fiber length between 48 and 60 mm, certified by the importer as having a solar reflectance index between 10 and 30 (provided for in subheading 5503.30.00).............................................................. 1/ 9902.13.17 On or before 12/31/2020 No change No change Free 1/ Acrylic staple fibers (polyacrylonitrile staple) containing 85 percent or more by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, colored, crimped, with a decitex between 1.98 and 2.42 and fiber length between 48 and 60mm, certified by the importer as having a solar reflectance index greater than 30 (provided for in subheading 5503.30.00)................................................................................... 1/ 9902.13.18 On or before 12/31/2020 No change No change Free 1/ Modacrylic staple fibers containing by weight 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with a decitex of 1.7 and fiber length of 38 mm (provided for in subheading 5503.30.00).......................................................... 1/ 9902.13.19 On or before 12/31/2020 No change No change Free 1/ Acrylic staple fibers (polyacrylonitrile staple), not dyed and not carded, combed or otherwise processed for spinning, containing by weight 92 percent or more of polyacrylonitrile, not more than 0.01 percent of zinc and 2 percent or more but not over 8 percent of water, with a decitex of 5.0 to 5.6 , with a fiber shrinkage of 0 to 22 percent and with a cut fiber length of 80 mm to 150 mm (provided for in subheading 5503.30.00)................................................................................... 1/ 9902.13.20 On or before 12/31/2020 No change No change Free 1/ Modacrylic staple fibers, not carded, combed or otherwise processed for spinning, containing over 35 percent and less than 85 percent by weight of acrylonitrile, 2.7 decitex (plus or minus 2 percent), natural in color, with fiber length between 38 mm and 120 mm (provided for in subheading 5503.30.00)................................................................................... 1/ 9902.13.21 On or before 12/31/2020 No change No change Free 1/ 1/ See chapter 99 statistical note 1. Rates of Duty 1 Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - II - 109 Note:The shaded areas indicate the provision has expired