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3920.20.00/Breathable PP Housewrap Sheeting/Mexico

Breathable PP Housewrap Sheeting from Mexico

Microporous polypropylene film for building moisture barriers (cast, not woven). 3920.20.00 as noncellular propylene sheet despite permeability.

Duty Rate — Mexico → United States

14.2%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Prove microporosity via process, not woven structure

• WVTR test data supports but doesn't change heading

• Rolls only; cut panels risk 3925 building articles