---
type: restriction
id: usps-electronic-tubes-charged-with-gas
asset: shipping-restrictions-by-class
title: "Electronic tubes charged with gas — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_021.htm
source_quote: "Electronic Tubes: These items are mailable without restriction if the volume does not exceed 30 cubic inches and the tube is charged with gas at 35 psig or less."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Electronic tubes charged with gas"
carrier: "USPS"
restriction_type: "restricted"
scope: "all mail"
conditions: "Mailable without restriction if volume does not exceed 30 cubic inches and tube is charged with gas at 35 psig or less; must be packed in strong outer containers"
verified: false
unverified_fields: conditions, item_category
---
**Item category:** Electronic tubes charged with gas

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** all mail

**Conditions:** Mailable without restriction if volume does not exceed 30 cubic inches and tube is charged with gas at 35 psig or less; must be packed in strong outer containers

> Electronic Tubes: These items are mailable without restriction if the volume does not exceed 30 cubic inches and the tube is charged with gas at 35 psig or less.

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