A. We recommend the motorised curtains cover the whole wall. If you choose to do so, then the width of the motorised curtain track would be the width of the wall, deduct 3~4 cm. If you choose to cover just the window, the width of the motorised curtain track would be the width of the window plus 60~80 cm for standard lengths (3m~4m) of curtain tracks. If your window or door is very wide and there are more runners used, you may need to consider to adding some extra length. A good rule of thumb - for a 2000mm window or recess you should have at least 200 mm each side of the window, for a 3000 mm window or recess you should have at least 300 mm each side of the window. Add extra for heavier fabrics.
Motorised curtains are typically better with traditional pleated curtains, so the fabric width should be 1.5~2 times the width of the curtain track depending on the thickness and the weight of the curtain fabric.