Stay compliant with the requirements of 49 CFR 172.315 when you use Labelmaster's Blank Square on Point Markings. Except for transportation by aircraft or as otherwise provided in 49 CFR 172.315, a package containing a limited quantity of hazardous materials is not required to be marked with the proper shipping name provided it is marked with the UN identification number within a square-on-point border. These blank markings allow you to use 3 1/2-in. vinyl numbers to fill in your own 4-digit UN Number in the space provided, which will keep your shipments moving. These removable vinyl markings leave no residue, measure 273 x 273mm and are sold in packs of 25 or cases of 900.