We use digital printing with both digital and mechanical cutting and production techniques. While we make every effort to ensure that your dimensions and printing line up precisely as you see them in proofing, there can be up to .125" (plus or minus) variance during manufacturing of any corrugated product. We recommend that you allow for this possibility in both sizing choices and in laying out your artwork.
For ease of packing and unpacking the contents of your boxes, we also recommend that you allow for about .25" on each dimension.
If you need to know external measurements for your box, or if you intend to nest boxes inside each other, please contact us for sizing advice. We'll be happy to share our formulas for how to do that effectively!