Satisfy the 4-digit number and HOT marking requirements of 49 CFR, Part 172.325(c) and 172.336(b) with Labelmaster's Hot Markings. These markings must be used with the worded flammable liquid placard to keep bulk packaging that contains an elevated temperature material in compliance. Highly durable, these permanent vinyl markings pass the IMO's 90-day sea water immersion test. Measuring 273 x 273mm, these markings are sold in packs of 25 and cases of 500.