How to Measure a Zipper

Type of Zipper Measurements
Closed-End Zipper (CE) Length (L) – From the top edge of the Slider to the bottom edge of the Bottom Stop.Tape Ends (L1) – From the Top Stop to the tip of the Cut End.

Bottom Tape Extension (L2) – From the Bottom Stop to the tip of the notches of the Cut End.

Zipper with Double Slider (Head to Head) Length (L) – From the upper edge of one Bottom Stop to the lower edge of the other Bottom Stop.Tape Ends (L1) – From the upper Bottom Stop to the tip of the Cut End.

Bottom Tape Extension (L2) – From the edge of the Bottom Stop to the tip of the Cut End.

 Zipper with Double Slider (Back to Back) Length (L) – From the upper edge of one Slider to the lower edge of the other Slider.Tape Ends (L1) – From the Top Stop to the tip of the Cut End.

Bottom Tape Extension (L2) – From the Bottom Stop to the tip of the Cut End.

 Open-Ended Zipper (OE) Length (L) – From the upper edge of the Slider to the bottom edge of the Box.Tape Ends (L1) – From the Top Stop to the tip of the Cut End.
 Two-Way Zipper Length (L) – From the upper edge of the Slider to the bottom edge of the Reinforce Tape.Tape Ends (L1) – From the Top Stop to the tip of the Cut End.

Tolerance of Dimensions during Manufacturing

Product Dimensions Maximum Tolerance allowed in Dimension Indication
Less than 30cm ± 5mm
30cm or more and less than 60cm ± 10mm
60cm or more and less than 100cm ± 15mm
100cm or more 3% of dimension indicated