Energy Star-rated and made with FSC-certified wood, NanaWall systems help small homes live bigger by connecting them with outdoor spaces. These innovative, folding glass walls allow you to create flexible indoor-outdoor rooms that connect your home with nature. The efficient systems have been featured in the Smart Home exhibit at Chicago’s Museum of Science and Industry and in the U.S. Department of Energy’s annual Solar Decathlon competition houses. (800) 873-5673.