4G Fiberboard boxes are packaging systems which include specific inner packages contained within a single outer package. The outer package bears the UN packaging code. Our stock of 4G boxes is designed to transport a wide range of dangerous goods in different types of inner packaging: paint cans, aerosols, batteries & more. All UN boxes comply with TDG, 49 CFR, IMDG Code, IATA, & ICAO TI.