We use Shrouded Cords, which means the cords are covered and cannot be "pulled out" from the shrouded. These cords are $15.00 extra per roman, to be collected at shipping with your balance. ALTHOUGH THESE CORDS ARE DESIGNED TO PROTECT CHILDREN FROM A CHOKING HAZARD, CHILDREN SHOULD BE WATCHED AT ALL TIMES, THEREFORE WE RELINQUISH ALL RESPONSIBILITY TOWARD OUR PRODUCTS SAFETY.

This Cord Lock System works like a venetian blind, locking roman in place, but remember you will still have a cord to contend with, every time you draw the shade, which you will wrap around a cleat. This SYSTEM cost $50.00 extra, which will be collected at shipping with your balance.
THIS SYSTEM IS NOT NECESSARY, IT IS JUST A PERSONAL PREFERENCE.

This answer will help us in sending the correct hardware

We'll need to make the cord a little longer if over a Sink