Opt for the ultimate in convenience, flexibility and efficiency when you choose Labelmaster’s 4 Legend Flip Placard System for Tankers. Our system includes five placard panels in a single frame: Flammable 3, Combustible 3, Poison 6, Corrosive 8 and Blank. Self-contained aluminum alloy placard panels slide over easily on four aluminum hinges, while notches allow you to flip numerals without interference and panels lock in place with four stainless steel pressure fasteners. Stable against high winds and heavy weather, these systems fit virtually any type of cargo tank for increased ease of use.