1. Tips for Measuring the Length of Open-end Zippers

①For standard open-end zippers, measure the length from the bottom of the zipper box to the top of the zipper slider or the top stop.

②For two-way open-end zippers, measure the length from the bottom of the left and right inserts to the top of the top stop.

③When measuring the length of the zipper, lay it flat on the table and measure it in its natural state.

2.Tips for Measuring the Length of Closed-end Zippers

①For standard closed-end zippers, measure the length from the bottom of the bottom stop to the top of the slider or the top stop.

②For O-shaped double bottom stop closed-end zippers, measure the distance between the bottom of two bottom stops.

③For X-shaped double top stop closed-end zippers, measure the length between the top of the two sliders.

④When measuring the length of the zipper, lay it flat on the table and measure it in its natural state.