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Heavyweight Fiberglass Insulation Mat from Japan

A mechanically bonded non-woven fiberglass fabric weighing over 215 g/m² with filament diameters of 7-13 microns, used for thermal and acoustic insulation in walls and attics. It falls under HTS 7019.69.40.21 due to its specific weight, filament size, and non-colored status as a glass fiber fabric. This mat is produced by bonding glass fibers without weaving, meeting the chapter's definition for such materials.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter

Import Tips

• Verify filament diameter and weight via lab testing to confirm classification under 7019.69.40.21; deviations may shift to other subheadings

• Provide mill test certificates documenting glass composition and bonding method to avoid misclassification as woven fabrics

• Ensure proper labeling for industrial use to prevent reclassification as consumer goods under Chapter 94