the foregoing other than self-contained machines of subheading 8415.10.30 Free No change No change On or before 12/31/2020 . 1441. Air conditioning units Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.61 Air conditioning machines, incorporating a refrigerating unit and a valve for reversal of the cooling/heat cycle (reversible heat pumps), the foregoing other than self-contained (provided for in subheading 8415.81.01) Free No change No change On or before 12/31/2020 . 1442. Certain portable air conditioners Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.62 Air conditioning machines, incorporating a refrigerating unit, mounted on wheels or castors, exceeding 17.58 kW per hour (provided for in 8415.82.01) 1.2% No change No change On or before 12/31/2020 . 1443. Portable air conditioners Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.63 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) Free No change No change On or before 12/31/2020 . 1444. Self-contained portable air conditioners Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.64 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) 1.8% No change No change On or before 12/31/2020 . 1445. Self-contained air conditioning units Subchapter II of chapter 99 is amended by inserting 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