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HTS heading 6806: Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and article

Heading 6806 of the US Harmonized Tariff Schedule covers Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound-insulating or sound-absorbing mineral materials, other than those of heading 6811 or 6812, or of chapter 69. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.

Official USITC HTS, 2026HTSRev22 · check on hts.usitc.gov

Heading 6806 at a glance

Goods named in this heading (official line texts): Slag wool, rock wool and similar mineral wools (including intermixtures thereof), in bulk, she…, Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (in….

Subheadings (6-digit)

All tariff lines in heading 6806

LineDescriptionGeneralSection 301 (China)Exclusions
6806.10.00Slag wool, rock wool and similar mineral wools (including intermixtures thereof), in bulk, she…3.9%List 3 +25%
6806.20.00Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (in…FreeList 3 +25%
6806.90.00Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded…: OtherFreeList 3 +25%

All of chapter 68 · Chapter 68 rate summary · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.

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