Product Details: The J.J. Keller Inc. Numer-All™ Flip Placard ensures you are Ready for the Road Ahead™, allowing you to instantly change both UN numbers and DOT placard legends so you can easily determine dangerous goods getting transported. This heavy duty placard meets hazmat placarding for specifications of 49 CFR § 172.519 for hazardous materials identification. <br/><br/>FleetPride is your First Click in Heavy Duty®.