Breathable PP Housewrap Sheeting from Canada
Microporous polypropylene film for building moisture barriers (cast, not woven). 3920.20.00 as noncellular propylene sheet despite permeability.
Duty Rate — Canada → United States
14.2%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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