How to Measure a Zipper
Standard for Measuring Dimensions

Classification Dimensions
(A)
Dimensions of top tape extension (B) Dimensions of bottom tape extension(C)
Closed-end zipper From the top end of the slider to the tip of the bottom stop From the top stop to the to the tip of notches of the cut end
From the bottom stop to the tip of notches of the cut end

Two way close-end zipper From the tip of one bottom stop to the tip of the other bottom stop From the upper bottom stop to the tip of notches of the cut end
From the tip of the bottom stop to the tip of notches of the cut end

Two way close-end zipper From the top end of one slider to the top end of the other slider From the top stop to the tip of notches of the cut end
Same as the top tape extention end portion

Open-end zipper From the top end of the slider to the tip of the box From the top stop to the cut end
 

Two way open-end zipper From the top end of the slider to the bottom end of the supplementary tape From the top stop to the cut end