# Paint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) — Postal shipping restrictions by item category For Paint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base), carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Hazard class 3, UN3469, packing group I, II; domestic mail air: Prohibited; domestic mail surface: Prohibited, recorded from its source on 2026-08-10. - **Item category:** Paint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) _(verified: appears in the quote below)_ - **Carrier:** USPS _(our reading, not quoted from the source)_ - **Restriction type:** prohibited _(our reading, not quoted from the source)_ - **Scope:** domestic mail (air and surface) _(our reading, not quoted from the source)_ - **Conditions:** Hazard class 3, UN3469, packing group I, II; domestic mail air: Prohibited; domestic mail surface: Prohibited _(verified: appears in the quote below)_ ## What the source says > Paint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) 3 UN3469 I, II Prohibited Prohibited ## Source - https://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf Last verified: 2026-08-10. Review by: 2027-08-10. Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).