# Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506) — Postal shipping restrictions by item category

For Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506), carrier is USPS; restriction type is restricted; scope is domestic mail via air or surface transportation; conditions is 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, recorded from its source on 2026-08-04.

- **Item category:** Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506)
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** domestic mail via air or surface transportation _(our reading, not quoted from the source)_
- **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 _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> 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

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/).