Folding, accordion-style sliding doors often show up in British shelter mags like LivingEtc. Every time we've seen them we've wondered why we don't seem to have 'em here. It wasn't until recently that we learned we do.
Started in the UK, The Folding Sliding Door Company now has factories in Las Vegas and Canada. Unlike traditional sliding doors, where half the opening is blocked by a closed door, their folding sliding doors open up completely. They can even be used on both sides of a corner.
See more photos here.
Contact the company here for a quote.