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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Pedestal column assemblies comprising parts for oscillating electric fans, presented in the assembled condition, each consisting of upper and lower tubes of steel, with thermoplastic collet (sleeve) covering the connection point of such tubes together with accompanying collet insert and allowing the two tubes to be locked at adjustable intervals (provided for in subheading 8414.90.10).............................................................. 1/ 9902.15.58 On or before 12/31/2020 No change No change Free 1/ Plastic grilles (provided for in subheading 8414.90.10), each incorporating a light-emitting diode (LED) light on the exterior perimeter capable of providing continuous light, certified by the importer as designed to be used with exhaust fans for permanent installation and generating 2.83 m3 per minute, such fans of a kind for residential use and described in subheading 8414.51.30............................................................... 1/ 9902.15.59 On or before 12/31/2020 No change No change Free 1/ Air conditioning machines, incorporating a refrigerating unit, mounted on wheels or castors, exceeding 17.58 kW per hour (provided for in 8415.82.01)........................................................ 1/ 9902.15.62 On or before 12/31/2020 No change No change 0.8% 1/ Air conditioning machines, each incorporating a refrigerating unit, mounted on wheels or castors, rated at less than 3.52 kW per hour (provided for in 8415.82.01)......................................... 1/ 9902.15.63 On or before 12/31/2020 No change No change Free 1/ Self-contained, portable air conditioning machines, not designed to be fixed to a window, wall, ceiling or floor, with cooling capacity rated at 3.52 kW per hour or more but less than 17.58 kW per hour (provided for in subheading 8415.82.01)................................................................................... 1/ 9902.15.64 On or before 12/31/2020 No change No change 1.8% 1/ Pressure distillation columns, designed to liquefy air and its component gases, the foregoing containing brazed aluminum plate-fin heat exchangers (provided for in subheading 8419.60.10)................................................................................... 1/ 9902.15.66 On or before 12/31/2020 No change No change 2.7% 1/ Shell and tube oil coolers designed for compression-ignition engines, such coolers measuring 50 cm or more but not over 180 cm in length, 10 cm or more but not over 70 cm in width and 15 cm or more but not over 70 cm in height (provided for in subheading 8419.89.95).......................................................... 1/ 9902.15.67 On or before 12/31/2020 No change No change Free 1/ Self-propelled sprinklers for agricultural or horticultural purposes, other than center pivot type (provided for in subheading 8424.82.00).............................................................. 1/ 9902.15.68 On or before 12/31/2020 No change No change Free 1/ Flexographic printing machinery, having continuous roll feed, designed for printing on paperboard (whether or not such paperboard is coated), with a printing speed less than 184 m/minute, and a print width of 101 cm or more but less than 280 cm (provided for in subheading 8443.16.00)..................... 1/ 9902.15.69 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 - 142 Note:The shaded areas indicate the provision has expired