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3921.11.00.00/Polystyrene Foam Underlayment Sheets/Japan

Polystyrene Foam Underlayment Sheets from Japan

EPS foam sheets used as flooring underlayment for sound and thermal insulation beneath laminate tiles. Classified 3921.11.00.00 as cellular styrene polymer plates. Moisture-resistant grade.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Certify compressive strength and R-value specs

• Avoid classification as finished flooring under 3918

• Check dimension limits per heading US note