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Mineral Wool Pipe Sound Attenuator from Japan

Pipe coverings incorporating mineral wool for acoustic dampening in ventilation systems. Qualifies under HTS 6806.10.00.60 for sound-absorbing mineral wool pipe articles.

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%

Import Tips

Include NRC (noise reduction coefficient) test data to substantiate sound-absorbing claim

Avoid bundling with duct silencers if they qualify as Chapter 94 prefabricated building articles

Density labeling prevents confusion with lower-density bulk fills