HTS code 9902.17.52 covers "Emergency lights, of base metal other than of brass, round or elongated in shape, measuring between 6 and 12 cm in height, each containing incandescent lamp, lamp holder, reflector, clear glass lens with drain hole, pressure can and electrical pigtail with connector; the foregoing configured to be mounted to the exterior of an aircraft and designed for illuminating egress paths on or around the aircraft during an emergency evacuation (provided for in subheading 9405.40.60)" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.