What are the dimensions of custom paper tape?

Our custom paper packing tape is 60mm wide (just a little wider than a standard roll of clear packing tape, and our custom poly tape). Each roll contains 45m of tape.  

When thinking about your design for custom-printed paper tape, you need to allow a 1.5mm "no print zone" margin on both the top and bottom of the tape, plus a 3mm gap between the repeat of each design.