These tough, durable orange panels can be used with worded placards to meet the marking requirements in 49CFR or IMDG. The 4-digit identification number for a chemical must be displayed on the outside of a vehicle that is carrying hazardous materials in bulk or more than 5,000 lbs. of non-bulk packages. The 4-digit orange panel must be displayed on all four sides of the vehicle. Orange panels are imprinted with UN3266 and measure 400mm x 160mm. Prices per each.