U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
3921.90.4050
$112.8M monthly imports
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Ruling Age
33 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-28 · Updates monthly
The tariff classification of building insulation fromCanada.
NY 880741 December 8, 1992 CLA-2-39:S:N:N6:221 880741 CATEGORY: Classification TARIFF NO.: 3921.90.4050 Ms. Sharon Lerum Norman G. Jensen, Inc. P.O. Box 146 Sweetgrass, MT 59484 RE: The tariff classification of building insulation from Canada. Dear Ms. Lerum: In your letter dated November 18, 1992, on behalf of Krona Industries, Canada, you requested a tariff classification ruling. The sample insulation material submitted with your request is made from two sheets of multicellular (bubble-pack) plastic film bonded together. Laminated onto both surfaces of the bonded multicellular film is an additional layer of plastic sheeting which has been coated on its outermost surface with a layer of vapor deposited aluminum particles. The insulation material will be imported in sheets, measuring four feet in width, on rolls. The applicable subheading for the insulation material will be 3921.90.4050, Harmonized Tariff Schedule of the United States (HTS), which provides for other plates, sheets, film, foil and strip, of plastics, other, flexible, other. The rate of duty will be 4.2 percent ad valorem. Goods classifiable under subheading 3921.90.4050, HTS, which have originated in the territory of Canada, will be entitled to a 2.5 percent ad valorem rate of duty under the United States- Canada Free Trade Agreement (FTA) upon compliance with all applicable regulations. This ruling is being issued under the provisions of Section 177 of the Customs Regulations (19 C.F.R. 177). A copy of this ruling letter should be attached to the entry documents filed at the time this merchandise is imported. If the documents have been filed without a copy, this ruling should be brought to the attention of the Customs officer handling the transaction. Sincerely, Jean F. Maguire Area Director New York Seaport