The moveable walls that make the open atrium practical are NanaWall opening glass wall systems. The longest is a single track sliding HSW60 system of 24 individual panels in two groups, over 80 feet in length. Two SL70 folding systems, 26 and 27 feet respectively, extend the atrium opening to more than 130 feet in all. The sliding panels go around corners, and three systems together account for about 75% of the area surrounding the atrium.
