---
type: restriction
id: usps-compact-fluorescent-lamps-and-similar-devices-with-small-amounts-of-mercury-un35
asset: shipping-restrictions-by-class
title: "Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506) — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_027.htm
source_quote: "Manufactured devices that contain small amounts of mercury (UN3506): Compact Fluorescent Lamps (CFL) and similar consumer devices containing minute amounts of mercury are mailable by air or surface only when each device, article, or apparatus contains 100 milligrams (mg) (0.0035 ounce) or less of mercury"
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506)"
carrier: "USPS"
restriction_type: "restricted"
scope: "domestic mail via air or surface transportation"
conditions: "Mailable if each device contains 100 mg or less of mercury and each mailpiece contains no more than 1 gram of mercury total; follow Packaging Instruction 8C"
verified: true
unverified_fields: carrier, conditions
---
**Item category:** Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506)

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** domestic mail via air or surface transportation

**Conditions:** Mailable if each device contains 100 mg or less of mercury and each mailpiece contains no more than 1 gram of mercury total; follow Packaging Instruction 8C

> Manufactured devices that contain small amounts of mercury (UN3506): Compact Fluorescent Lamps (CFL) and similar consumer devices containing minute amounts of mercury are mailable by air or surface only when each device, article, or apparatus contains 100 milligrams (mg) (0.0035 ounce) or less of mercury

Source: <https://pe.usps.com/text/pub52/pub52c3_027.htm>