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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Flexible film of acrylic polymers, other than poly(methyl methacrylate) (provided for in subheading 3920.59.10).......... 1/ 9902.11.85 On or before 12/31/2020 No change No change Free 1/ Poly(vinyl butyral) film (CAS No. 27360-07-2), certified by the importer to be used in aircraft (provided for in subheading 3920.91.00)................................................................................... 1/ 9902.11.86 On or before 12/31/2020 No change No change 3.7% 1/ Sheets of regenerated cellulose, cellular, nonadhesive, rectangular in shape and measuring 750 mm or more but not over 885 mm in length, 765 mm or more but not over 885 mm in width and 0.9 mm or more but not over 1.9 mm in thickness (provided in for subheading 3921.14.00)................................... 1/ 9902.11.87 On or before 12/31/2020 No change No change Free 1/ Expanded poly(tetrafluoroethylene) (PTFE) nonadhesive cellular sheets, of a thickness greater than 1.5 mm but not more than 3.0 mm, certified by the importer as having a tensile strength of at least 48.3 MPa (7,000 psi) per ASTM F-152 (CAS No. 9002-84-0) (provided for in subheading 3921.19.00)................................................................................... 1/ 9902.11.88 On or before 12/31/2020 No change No change Free 1/ Expanded poly(tetrafluoroethylene) (PTFE) nonadhesive cellular sheets, of a thickness greater than 3.0 mm but not more than 6.0 mm, certified by the importer as having a tensile strength of at least 48.3 MPa (7,000 psi) per ASTM F-152 (CAS No. 9002-84-0) (provided for in subheading 3921.19.00)................................................................................... 1/ 9902.11.89 On or before 12/31/2020 No change No change Free 1/ Injection molded thermoplastic dental restorative product containers, designed for use in a dispensing system, each container with capacity not over 50 ml (provided for in subheading 3923.30.00) ............................................................. 1/ 9902.11.90 On or before 12/31/2020 No change No change Free 1/ Plug-type closures of polyethylene, suitable for use in capping specimen tubes and measuring 15 mm in length; each closure having an upper portion designed to extend beyond the specimen tube to permit holding of the closure, such upper portion having a diameter of 15.5 mm and thickness of 3.3 mm and having a notched groove; with the bottom portion of such closure designed for insertion into a specimen tube having a diameter measuring approximately 11.7 mm; the foregoing closures certified by the importer as for use in an automated insertion system (provided for in subheading 3923.50.00)...... 1/ 9902.11.91 On or before 12/31/2020 No change No change Free 1/ Injection molded thermoplastic dental restorative product dispenser closures fitting containers with capacity less than or equal to 50 ml (provided for in subheading 3923.50.00) ..... 1/ 9902.11.92 On or before 12/31/2020 No change No change 1.3% 1/ Plastic lids certified by the importer for use on food storage containers (provided for in 3923.50.00)..................................... 1/ 9902.11.93 On or before 12/31/2020 No change No change Free 1/ Plastic cap for sport water bottle of the squeezable type (provided for in 3923.50.00)........................................................ 1/ 9902.11.94 On or before 12/31/2020 No change No change 0.5% 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 - 94 Note:The shaded areas indicate the provision has expired