Hazmat placard set legends are screen printed with fade-resistant UV inks and manufactured of .024" aluminum (75% post-consumer recycled content). The legends included are: Division 2.1 Flammable Gas, Division 2.2 Oxygen, Division 2.3 Inhalation Hazard, Division 2.2 Non-Flammable Gas, and a Blank. Flip placards meet DOT placarding specifications of 49 CFR 172.519 for hazardous materials identification. J. J. Keller Dura-Clip fasteners stop clip arms from being dislodged. Stainless steel reinforced quick-release clamps hold hazardous materials placards securely in place. Available with clipped corners on top and bottom to accommodate roll-up doors and trailers. Includes one back plate manufactured of .016" galvanized steel (30% post-consumer recycled content) and measures: Side to side - 13.75" (350mm); Left to right (corners) - 18.56" (472mm); Top to bottom (corners) - 14.96" (380mm). Hazmat placards comply with ISO 9000 Green Initiative, California Buy Recycled program, and EPA Comprehensive Procurement Guidelines (CPG) program.