Water-Resistant Bitumen Fiberboard Insulation Boards from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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