If you need instructions on how to measure for your curtains, click here.
Each pack contains 1 curtain. The width measure listed is the flat width of the curtain before you put it on the rod.
The 140cm curtain will cover up to about 100cm of curtain rod when drawn closed. The 240cm will cover up to about 160cm and the large 320cm size will cover up to about 210cm of curtain rod.
These are the perfect RM Eyelet if you order 2 as a Pair on a maximum width 400cm rod!