These tough, durable orange panels can be used with worded placards to meet the marking requirements in 49CFR or IMDG. When required, 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 4,000kg of a single hazardous material in non-bulk packages. The orange panel must be displayed on all four sides of the vehicle. These blank orange panels that can be filled in with 4" removable vinyl numbers that are sold separately. Orange panels are made of permanent vinyl, ez-removable vinyl or non-adhesive tagboard. Orange panels measure 400mm x 160mm. Prices per each.