in numerical sequence the following new heading: 9902.15.65 Self-contained air conditioning machines, not incorporating a refrigerating unit, including those machines in which the humidity cannot be separately regulated, each comprising a motor-driven fan and elements for changing the temperature and humidity, with remote condenser unit, exceeding 17.58 kW per hour but without a valve for reversal of the cooling/heating cycle (provided for in subheading 8415.83.00) Free No change No change On or before 12/31/2020 . 1446. Pressure distillation columns Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.66 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) 2.7% No change No change On or before 12/31/2020 . 1447. Shell and tube oil coolers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.67 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) Free No change No change On or before 12/31/2020 . 1448. Mobile sprinklers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.68 Self-propelled sprinklers for agricultural or horticultural purposes, other than center pivot type (provided for in subheading 8424.82.00) Free No change No change On or before 12/31/2020 . 1449. Flexographic printers with print speed less than 184 meters per minute Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.69 Flexographic printing machinery, having continuous roll feed, designed for printing on paperboard (whether or not such paperboard is coated), with a printing