---
type: restriction
id: usps-mercury-vapor-devices
asset: shipping-restrictions-by-class
title: "Mercury Vapor Devices — Postal shipping restrictions by item category"
sources:
  - https://www.usps.com/ship/shipping-restrictions.htm
source_quote: "Some consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable."
generated: true
harvested: 2026-08-03
stale_after: 2027-08-03
item_category: "Mercury Vapor Devices"
carrier: "USPS"
restriction_type: "restricted"
scope: "domestic"
conditions: "These items are restricted, but mailable"
verified: false
unverified_fields: carrier, item_category, scope
---
**Item category:** Mercury Vapor Devices

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** domestic

**Conditions:** These items are restricted, but mailable

> Some consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable.

Source: <https://www.usps.com/ship/shipping-restrictions.htm>