If you are a returning client and your facility already has the ZipQuick Mesh installed on your curtain tracks then, yes, you need only order a replacement panel.
If however you have never ordered from us before you will need to order both the mesh and the curtains.  The Mesh is a semi-permanent piece that attaches to your existing curtain tracks.  It features our (patent pending) heavy duty zipper integrated into  the bottom.  That is what your ZipQuick curtain panel attaches to and why it can be changed out so quickly.