Hazard Class 2 Non-Flammable Gas Worded Placards are required by 49 CFR 172.500 for highway, rail and water shipments of hazardous gases. Designed to meet DOT specifications for color and size, these 273mm x 273mm Non-Flammable Gas Hazard Class 2 Placards may be used domestically as well as internationally. Our aluminum DOT Hazard Class 2 placards are an excellent investment if you’re looking for long-lasting use. Constructed of a corrosion-resistant aluminum alloy, these DOT placards will withstand the toughest road and weather conditions. The acrylic paint finish is baked on at 400 degrees for superior durability. Aluminum Non-Flammable Gas Hazard Class 2 placards can be used in Slidemaster holders. Sold per each.