What's the best way to establish a seamless interplay between the indoor and outdoor living areas of your home? It may very well be a folding patio door system like this one. Available from JELD-WEN in a range of sizes and panel configurations—not to mention multiple materials and finishes—folding doors all but disappear when opened. The effect could hardly be more dramatic. The system creates expansive, free-and-clear openings up to 48 feet wide, allowing formerly separate zones—the kitchen and deck, say, or the bedroom and balcony—to achieve a perfect union.