# United States tariff lines under HS 6806.90

> The United States tariff splits HS 6806.90 (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) into 3 national lines: 6806.90.00.10 (accoustical pads and boards), 6806.90.00.20 (of molded calcium silicate) and 6806.90.00.90 (other). Every United States line under 6806.90 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/680690
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 68](https://border.bot/countries/united-states/hs-codes/68) / [6806.90](https://border.bot/countries/united-states/hs-codes/680690)

## Key facts

- HS subheading: [6806.90](https://border.bot/hs-codes/680690)
- Duty (MFN): Free
- National lines: 3
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 68: Articles of stone, plaster, cement, asbestos, mica or similar materials

## United States lines under 6806.90

The United States tariff splits HS 6806.90 (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) into 3 national lines: 6806.90.00.10 (accoustical pads and boards), 6806.90.00.20 (of molded calcium silicate) and 6806.90.00.90 (other).

Every United States line under 6806.90 is free of general (MFN) duty.

- [6806.90.00.10](https://border.bot/countries/united-states/hs-codes/6806900010) Other, Accoustical pads and boards. Duty (MFN): free
- [6806.90.00.20](https://border.bot/countries/united-states/hs-codes/6806900020) Other, Other, Of molded calcium silicate. Duty (MFN): free
- [6806.90.00.90](https://border.bot/countries/united-states/hs-codes/6806900090) Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 6806.90 yet.

- [The Harmonized System text for 6806.90](https://border.bot/hs-codes/680690)

- Previous subheading: [6806.20](https://border.bot/countries/united-states/hs-codes/680620) 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
- Next subheading: [6807.10](https://border.bot/countries/united-states/hs-codes/680710) Articles of asphalt or of similar material (for example, petroleum bitumen or coal tar pitch)

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 6806.90?

The United States tariff splits HS 6806.90 (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) into 3 national lines: 6806.90.00.10 (accoustical pads and boards), 6806.90.00.20 (of molded calcium silicate) and 6806.90.00.90 (other).

### What is the duty on HS 6806.90 in the United States?

Every United States line under 6806.90 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/680690.json