Thermal Label Core Sizes

Thermal Label Core Sizes

10th Sep 2019

It is easy to assume that labels are a very simple product, and in many regards that is fair, they are by design generally rudimentary. There are no intricate pieces on labels, no truly complex procedures, and no outstanding features that make them difficult to handle. Despite its blatant simplicity, though, there are a few key distinctions that are important between Thermal Printing Labels:

  • One particular difference that will be covered in this blog post is the core size of labels. In the label world, there are typically two primary sizes of label cores: the 1” core and 3” core. The core itself is the brown cardboard center around which the labels are wrapped.
  • Along with the core size, another key difference is the labels’ outer diameter. It is important to note, as well, that the measurement of diameter includes both the itself and the core. Although the outer diameter could be of a varying range of sizes, a 1” core size will not exceed a maximum 4” diameter. Additionally, a core with measurements of 3” will not have a maximum diameter beyond 8”.
  • Last to note, it should be known that the sizes discussed in this blog post apply only to Thermal Label rolls. Label types such as sheeted and fanfold, which will be addressed in an additional blog post, do not have core sizes.


It’s hard to know so many distinct specifications can be applied to a product as simple as labels, that’s why we try to make it as easy to understand as possible. For more information, tips, and tricks, be sure to follow the blog posts here on our website, or simply call us at 800-587-1173 and we will be more than happy to help you with anything.

For quality label products of any variety we encourage you to shop, here, at Print.Save.Repeat. We offer the highest quality in the market at a fair price, and are confident you will make the right choice and go will Print.Save.Repeat. for any and all of your label printing needs.