Z-Select 4000D Paper Labels (4.00 Inch x 6.00 Inch, 475 Labels Per Roll - 12 Rolls per Case) A bright white direct thermal paper label stock for printing high-contrast, black, visible light images in cold temperature applications. It has a special acrylic-based cold temperature adhesive that survives at temperatures as low as -65� F and applied at temperatures as low as -20� F. Ideal for use with freezer-grade materials. Not recommended for use when exposed to sunlight or when exposed to extreme high temperatures.