Have you declared it? - English US Regulations
This US specific wall poster sized, 24 x 36 in. is meant for cargo acceptance areas.
Sized 24 x 36 in., this poster will ensure that shippers tendering cargo and airline's acceptance staff are visually made aware of the kinds of items that may be considered dangerous goods and, in order to avoid costly delays and potential accidents or incidents, need to be prepared in accordance with the IATA Dangerous Goods Regulations (DGR) for transport.
This poster is in compliance with the ICAO Technical Instructions, 49 CFR and IATA DGR requirements to display information at cargo acceptance areas.