Can I have a 2100mm wide vertical blind single track open both ways so bunching is smaller on right and left

https://www.blindsbypost.co.uk/vertical-blind-headrail-and-track/89mm-white-vertical-blind-head-rail?fast_search=fs

Please see the link to the 89mm headrail above and the link to 127mm headrail below:

https://www.blindsbypost.co.uk/vertical-blind-headrail-and-track/127mm-white-vertical-blind-head-rail?fast_search=fs