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U.S. Notes (con.) (b) The additional aggregate quantity of beef of Argentina specified under Additional U.S. Note 3(b) to chapter 2 of the HTSUS and as provided in heading 9903.54.01, shall be administered on a quarterly basis such that, in any quarter, the additional aggregate quantity of lean beef trimmings of Argentina, entered under Additional U.S. Note 3(b) to chapter 2 of the HTSUS, heading 9903.54.01 and statistical reporting numbers 0201.30.5091, 0201.30.5097, 0202.30.5091, and 0202.30.5097, shall not exceed 20,000 metric tons. [U.S. note 8 deleted] [U.S. note 9 deleted] [U.S. note 10 deleted] [U.S. note 11 deleted] [U.S. note 12 deleted] 13. (a) For the purposes of subheading 9903.53.01, the duties provided for in this subchapter are cumulative duties which apply in addition to the duties otherwise imposed on the articles involved. [Compiler's note: the provisions of this note and the related heading have expired.] (b) For the purposes of subheading 9903.53.01, and as provided in Annex 1A of the 2006 Softwood Lumber Agreement between the United States and Canada, signed on September 12, 2006, as amended by an Agreement between the United States and Canada, signed on October 12, 2006 (SLA 2006), "softwood lumber products" include all products classified under subheadings 4407.10.01, 4409.10.10, 4409.10.20, 4409.10.90, and 4418.90.25, and under statistical reporting number 4418.90.4605, and any softwood lumber, flooring, and siding described below. These softwood lumber products include: (i) coniferous wood, sawn or chipped lengthwise, sliced or peeled, whether or not planed, sanded or finger-jointed, of a thickness exceeding 6 mm; (ii) coniferous wood siding (including strips and friezes for parquet flooring, not assembled) continuously shaped (tongued, grooved, rabbeted, chamfered, v-jointed, beaded, molded, rounded, or the like) along any of its edges or faces, whether or not planed, sanded, or finger-jointed; (iii) other coniferous wood (including strips and friezes for parquet flooring, not assembled) continuously shaped (tongued, grooved, rabbeted, chamfered, v-jointed, beaded, molded, rounded, or the like) along any of its edges or faces (other than wood moldings and wood dowel rods) whether or not planed, sanded, or finger-jointed; (iv) coniferous wood flooring (including strips and friezes for parquet flooring, not assembled) continuously shaped (tongued, grooved, rabbeted, chamfered, v-jointed, beaded, molded, rounded, or the like) along any of its edges or faces, whether or not planed, sanded, or finger-jointed; and (v) coniferous drilled and notched lumber and angle cut lumber. (c) For the purposes of subheading 9903.53.01, and as provided in Annex 1A of the SLA 2006, "softwood lumber products" shall also include: (i) any product entering under subheading 4409.10.05 which is continually shaped along its end and/or sided edges which otherwise conforms to the written definition of the scope; and (ii) lumber products that are classified as stringers, radius cut box-spring-frame components, and fence pickets, not conforming to the criteria listed in subdivision (f) of this note, as well as truss components, pallet components, and door and window frame parts, which may be imported under statistical reporting numbers 4418.90.4695, 4421.90.7040 and 4421.90.9760. (d) For the purposes of subheading 9903.53.01 and the definition of "softwood lumber products," the subheading references and statistical reporting numbers in this note are provided for convenience; the written description of softwood lumber products in this note is dispositive. (e) The following articles are not "softwood lumber products" for purposes of subheading 9903.53.01: (i) trusses and truss kits, properly classified under subheading 4418.90; (ii) I-Joist beams; Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - III - 61