Water-Resistant Bitumen Fiberboard Insulation Boards from Japan
Insulation-grade fiberboard impregnated with bitumen for humidity resistance, density exceeding 0.35 but ≤0.5 g/cm³. Fits HTS 4411.94.00.10: other fiberboard, not mechanically worked, bitumen impregnated, no surface covering. Used in wall and ceiling insulation systems.
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
• Obtain third-party density and impregnation verification to prevent customs disputes
• Label as 'not for structural use' if applicable to avoid reclassification
• Check EPA TSCA compliance for composite wood formaldehyde emissions