Bitumen Sealed MDF Construction Sheathing Board from Japan
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 — 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
• 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