Bitumen Sealed MDF Construction Sheathing Board from China
Density-controlled fiberboard (0.35-0.5 g/cm³) fully impregnated with bitumen for use as exterior sheathing in framing, providing weatherproofing. Meets HTS 4411.94.00.30 criteria for medium density and bitumen impregnation. Used in residential and commercial building envelopes.
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
Import Tips
• Submit third-party lab reports confirming density range and bitumen penetration depth
• Avoid common pitfall of density mismeasurement by using calibrated equipment per ASTM standards
• Ensure CARB Phase 2 certification for formaldehyde to prevent CBP holds