To know how to order this product you have to know how many yards of fabric you are working with.
This item is sold by the yard
If its panels measure the Flat width of the fabric you will be using.
same with sheer
if its 100 inches order 3 yards
It's usually between 2 to 2.25 the width of the window size
you will also need the cariers that it snaps in to
There is approximately 10 snaps in a yard so you will need to order 10 cariers per yard of snap tape.
always order a few extra to make sure its right you can't add them afterwards.
Drapery King Toronto