HDPE Construction Vapor Barrier Film from Japan
High-density polyethylene film used as a moisture barrier under flooring in construction. Noncellular and not combined with other materials, classified under ethylene polymers. Typically 6-15 mil thick for residential and commercial builds.
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
• Include ASTM D4397 compliance certs; non-compliant films face CBP holds
• Measure density accurately—HDPE must confirm ethylene base over 95%
• Avoid bulk packing without separators to prevent customs valuation disputes