# United States tariff line 8421.39.01.30: Other

> In the United States tariff, line 8421.39.01.30 covers filtering or purifying machinery and apparatus for gases, industrial gas cleaning equipment. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8421.39 in heading 84.21 (chapter 84).

Source: https://border.bot/countries/united-states/hs-codes/8421390130
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8421.39](https://border.bot/countries/united-states/hs-codes/842139) / [8421.39.01.30](https://border.bot/countries/united-states/hs-codes/8421390130)

## Key facts

- Tariff line: 8421.39.01.30
- Covers: Filtering or purifying machinery and apparatus for gases, industrial gas cleaning equipment
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [8421.39](https://border.bot/hs-codes/842139)

## What this line covers

In the United States tariff, line 8421.39.01.30 covers filtering or purifying machinery and apparatus for gases, industrial gas cleaning equipment.

Its legal text is “Other”, read under “Filtering or purifying machinery and apparatus for gases”, “Other”, “Other” and “Industrial gas cleaning equipment”.

## How it is structured

It falls under HS subheading 8421.39 in heading 84.21 (chapter 84). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.21: Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof
- Subheading 8421.39: Filtering or purifying machinery and apparatus for gases
- Within the subheading: Other
- Within the subheading: Other
- Within the subheading: Industrial gas cleaning equipment
- Line 8421.39.01.30: Other

## Duty

Goods under this line enter free of general (MFN) duty.

The rate is published on 8421.39.01.

## In other countries

No other national tariff on border.bot has live lines under 8421.39 yet.

- [The Harmonized System text for 8421.39](https://border.bot/hs-codes/842139)

## Other lines under 8421.39

- [8421.39.01.05](https://border.bot/countries/united-states/hs-codes/8421390105) For machine tools of headings 8456 through 8465, inclusive
- [8421.39.01.15](https://border.bot/countries/united-states/hs-codes/8421390115) Other
- [8421.39.01.20](https://border.bot/countries/united-states/hs-codes/8421390120) Electrostatic precipitators
- [8421.39.01.40](https://border.bot/countries/united-states/hs-codes/8421390140) Gas separation equipment
- [8421.39.01.60](https://border.bot/countries/united-states/hs-codes/8421390160) Pneumatic fluid power filters, rated at 550 kPa or greater
- [8421.39.01.90](https://border.bot/countries/united-states/hs-codes/8421390190) Other

- Previous line: [8421.39.01.20](https://border.bot/countries/united-states/hs-codes/8421390120) Electrostatic precipitators
- Next line: [8421.39.01.40](https://border.bot/countries/united-states/hs-codes/8421390140) Gas separation equipment

## Frequently asked questions

### What does tariff line 8421.39.01.30 cover in the United States tariff?

In the United States tariff, line 8421.39.01.30 covers filtering or purifying machinery and apparatus for gases, industrial gas cleaning equipment.

### What is the general (MFN) duty on 8421.39.01.30 in the United States?

Goods under this line enter free of general (MFN) duty. The rate is published on 8421.39.01.

## 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/8421390130.json