over $1,000 each (provided for in subheading 8414.10.00) 0.2% No change No change On or before 12/31/2025 . 11997. Rotary vane vacuum pumps valued over $500 each Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.18 Rotary vane vacuum pumps, incorporating vanes mounted to a rotor inside a cavity, such pumps valued over $500 each (provided for in subheading 8414.10.00) Free No change No change On or before 12/31/2025 . 11998. Vacuum diffusion pumps valued over $900 each Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.19 Vacuum diffusion pumps, using a high speed jet of vapor to direct gas molecules, valued over $900 each (provided for in subheading 8414.10.00) Free No change No change On or before 12/31/2025 . 11999. Hand- or foot-operated air pumps Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.20 Hand- or foot-operated air pumps (provided for in subheading 8414.20.00) 2.8% No change No change On or before 12/31/2025 . 12000. Roof vent fans Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.21 Ventilation fans, designed for permanent installation on the rooftop of recreational and specialty vehicles, each consisting of an electric D/C motor with an output wattage over 9 W but not exceeding 28 W, a plastic fan blade of a diameter between 15.24 cm and 30.48 cm and a base plate (provided for in subheading 8414.51.30) 2.8% No change No change On or before 12/31/2025 . 12001. 12-Amp corded electric leaf blowers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.22 Electric centrifugal blowers, of a kind used solely or principally for blowing leaves, each with a self-contained AC electric motor not exceeding 12 A and an output not exceeding 1.45 kW (provided for in subheading 8414.59.65) Free No change No change On or before