This Full Frame Spacemaster System includes 17 placard panels in a single frame: Dangerous Flammable Gas 2 Poison 6 Non-Flammable Gas 2 Corrosive 8 Flammable Liquid 3 Oxidizer 5.1 Organic Peroxide 5.2 Explosive 1.4 Spontaneously Combustible 4 Flammable Solid 4 Inhalation 6 Dangerous When Wet 4 Blasting Agents 1.5D Miscellaneous 9 PG III Inhalation 2 Blank Placards meet DOT specifications for transporting hazardous materials. Changing DOT placards when your load changes is as easy as the flip of a panel. Spacemaster eliminates the hassle and expense of replacing placards, so DOT compliance is virtually at your fingertips. Spacemaster frames are constructed of corrosion-resistant, fully formed rigid aluminum that provides superior durability, even under the toughest road conditions. Self-contained placard panels are constructed of aluminum alloy and mill rollercoated with white acrylic paint. Panels lock in place with 4 double-riveted stainless steel pressure fasteners. Legends are silkscreened with UV inks to retard fading, chipping or peeling. Spacemaster Full Frame, 17-Legend Flip Placard System for Trailers is sold per each.