; the foregoing, if presented without blower, incorporating other ventilating equipment (provided in subheading 8414.80.90) Free No change No change On or before 12/31/2020 . 1438. Pre-assembled pedestal fan column assemblies Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.58 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) Free No change No change On or before 12/31/2020 . 1439. Grilles for exhaust fans Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.59 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 m 3 per minute, such fans of a kind for residential use and described in subheading 8414.51.30 Free No change No change On or before 12/31/2020 . 1440. Certain ductless mini split air conditioners Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.60 Air conditioning machines, split-system and designed to be used without ductwork, each consisting of a compressor unit for outdoor placement and an indoor air handler unit or motor-driven fan, such units connected by refrigerant lines (provided for in subheading 8415.10.90), 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