U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
8421.99.0080
$185.3M monthly imports
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Ruling Age
30 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-29 · Updates monthly
The tariff classification of filter media from Germany.
NY 815060 September 28, 1995 CLA-2-84:R:N1:104 815060 CATEGORY: Classification TARIFF NO.: 8421.99.0080 Ms. Leigh A. Glazer Carr Consulting Group P.O. Box 398 Farmington, MI 48335 RE: The tariff classification of filter media from Germany. Dear Ms. Glazer: In your letter dated September 18, 1995 on behalf of Farr Company of El Segundo, California you requested a tariff classification ruling. You have provided a sample of Blucher Nanosorb filter media, a reticulated polyurethane foam containing 0.5 mm diameter spherical activated carbon bonded to the foam throughout its volume. The carbon spheres account for 75% of the item's total weight. The remaining 25% is the reticulated foam. Farr will purchase the Nanosorb filter media in one size only, 11 1/8" x 21 7/8" x 20 mm thick and in only one porosity, 20 PPI. After importation, Farr will assemble a metal frame around the outside of the material. No further work will be performed on the media. After the framing operation, the filters will be installed in air filtering machines used to abate gas phase pollutants in ventilating air. The applicable subheading for the Blucher Nanosorb filter media will be 8421.99.0080, Harmonized Tariff Schedule of the United States (HTS), which provides for parts of filtering or purifying machinery and apparatus, for liquids or gases. The rate of duty will be 3.1 percent. This ruling is being issued under the provisions of Section 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If you have any questions regarding the ruling, contact National Import Specialist Robert Losche at 212-466-5670. Sincerely, Roger J. Silvestri Director National Commodity Specialist Division