Vertical blinds are available in 89mm, 127mm or 250mm wide vanes. They are powered by mains supply, and operate via wire-free wallswitch or remote-control handset.
The vanes will pull across (from either side or split draw) and then go through the full cycle of tilting. This movement can be stopped at any time in the cycle.
Any fabrics can be used, including wood and PVC vanes. They are excellent for wide windows, patio doors, bifold doors and large conservatory areas.