4411.94.00.30/Bitumen Impregnated Medium Density Fiberboard Roof Underlayment/China

Bitumen Impregnated Medium Density Fiberboard Roof Underlayment from China

This medium density fiberboard (MDF), with density between 0.35-0.5 g/cm³, is impregnated with bitumen to enhance water resistance and durability for use as roof underlayment. It falls under HTS 4411.94.00.30 due to its specific density range and bitumen impregnation, distinguishing it from higher density or untreated fiberboards. Commonly used in construction for protecting roofs from moisture penetration.

Duty Rate — China → United States

37.5%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

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Import Tips

• Verify density certification (0.35-0.5 g/cm³) and bitumen impregnation content via lab testing to confirm HTS 4411.94.00.30 classification

• Include manufacturer's specs and impregnation process documentation to avoid misclassification as plain fiberboard

• Check for formaldehyde emission compliance under TSCA Title VI for composite wood products