; such pumps measuring approximately 22 cm in height and 16 cm in width, having an aperture to connect with a HEPA filter and a power output rating exceeding 850 W but not over 1050 W, valued no more than $24 each (provided for in subheading 8414.10.00) Free No change No change On or before 12/31/2020 . 1434. Exhaust fans for permanent installation Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.54 Exhaust fans for permanent ceiling installation designed to be used in the bathroom, each containing an electric motor with an output wattage not exceeding 125 W, with or without a light, with volume flow between 1.35 m 3 and 2.04 m 3 per minute and having a sound level greater than 2.2 sones but not exceeding 6.8 sones (provided for in subheading 8414.51.30) 4.1% No change No change On or before 12/31/2020 . 1435. Exhaust fans for permanent installation Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.55 Exhaust fans designed for permanent ceiling installation in bathrooms, each with a self-contained electric DC brush-less motor with an output wattage not exceeding 125 W, with or without a light, such fans having a sound level rating greater than 0.1 sone but not exceeding 1.2 sones (provided for in subheading 8414.51.30) 3.0% No change No change On or before 12/31/2020 . 1436. Blower subassemblies incorporated into fans Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.15.56 Blower subassemblies, each consisting of an electric A/C or D/C motor with an output wattage over 18.5 W but not exceeding 38.5 W, a metal or plastic blower wheel and a base plate, designed to be incorporated in ceiling fans for permanent installation of subheading 8414.51.30 or in heating units combining a heater, fan and lights for permanent installation, of subheading 8516.29.00 (provided for in subheading 8414.59.65) Free No change No change On or before 12/31/2020 .