# Fire Extinguishers (UN1044) — Division 2.2 nonflammable compressed gas — Postal shipping restrictions by item category

For Fire Extinguishers (UN1044), item category is Fire Extinguishers (UN1044) — Division 2.2 nonflammable compressed gas; carrier is USPS; restriction type is restricted; scope is domestic mail; conditions is Mailable if do not contain methyl bromide gas mixtures, meet DOT container specifications, hold nonflammable/nonpoisonous/noncorrosive gas; only one extinguisher per mailpiece, recorded from its source on 2026-08-04.

- **Item category:** Fire Extinguishers (UN1044) — Division 2.2 nonflammable compressed gas
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** domestic mail _(our reading, not quoted from the source)_
- **Conditions:** Mailable if do not contain methyl bromide gas mixtures, meet DOT container specifications, hold nonflammable/nonpoisonous/noncorrosive gas; only one extinguisher per mailpiece _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Fire Extinguishers (UN1044): Division 2.2 nonflammable compressed gas. Fire extinguishers that contain nonflammable compressed gas are mailable if they do not contain methyl bromide gas mixtures

## Source

- https://pe.usps.com/text/pub52/pub52c3_021.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).