NEED these ''concertina windows''!! Anyone know where I can get them from?

[fancyacoffee]

www.houzz.co.uk/photos/248238/wilsondale-project-country-kitchen-boston

These are so great and would be perfect for my extension. Does anyone know where I could get them from? xxx

[Behooven]

I think they are called bi-fold windows. A quick google brought up a few companies, e.g. www.duration.co.uk/Aluminium-Folding-Windows.asp