---
type: restriction
id: usps-propane-division-2-1-flammable-gas
asset: shipping-restrictions-by-class
title: "Propane — Division 2.1 flammable gas — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_021.htm
source_quote: "Propane: Division 2.1 flammable gas. Propane is mailable via surface transportation as a Limited Quantity material only. Air transportation is prohibited."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Propane — Division 2.1 flammable gas"
carrier: "USPS"
restriction_type: "restricted"
scope: "domestic mail via surface transportation only"
conditions: "Mailable via surface transportation as Limited Quantity material only; air transportation is prohibited"
verified: false
unverified_fields: carrier, item_category
---
**Item category:** Propane — Division 2.1 flammable gas

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** domestic mail via surface transportation only

**Conditions:** Mailable via surface transportation as Limited Quantity material only; air transportation is prohibited

> Propane: Division 2.1 flammable gas. Propane is mailable via surface transportation as a Limited Quantity material only. Air transportation is prohibited.

Source: <https://pe.usps.com/text/pub52/pub52c3_021.htm>