Prepare your semi truck to be Ready for the Road Ahead , with the LabelMaster 13.5" x 13.5" Inhaling Hazard / Flammable 8-Legend Frame Placard that acts as a visible display of hazardous contents. By offering a wide variety of signs, this replacement placard allows vehicles to meet DOT requirements by indicating when they are carrying dangerous or hazmat materials. Built with weather-resistant and rugged materials to deliver year-round reliability. FleetPride is your First Click in Heavy Duty .