Our specialty doors are designed to take contemporary designs to any level it wants, turning walls into moving masterpieces. Sierra Pacific’s Bi-Fold door designs fold effortlessly to stack either side of their expansive openings with an access panel to allow passage without moving the entire system. They stack to one side or both sides, can swing in or swing out, and can even go around a 90-degree corner. Limitless applications for both residential and commercial applications. Enjoy the entire view and all the fresh air you can get with a bi-fold door up to 10 feet tall and, yes, up to 23 feet wide. When fully open, the folding panels stack perpendicular to the wall to optimize space. Choose from a number of operational configurations. 23 feet wide with as many as 8-panels. (Max panel width is 39”, max height is 119-1/2”.) Standard bi-fold has 4-5/8” stiles and top rail, 6-3/16” bottom rail. 1-3/4” or 2-1/4” thick panels. Thick heavy-duty extruded aluminum cladding for a low maintenance exterior. ADA sill or U-Channel optional. Symphony flush bolts are standard. Hidden multi-point optional. Largest selection of options including 75 exterior colors and anodize finishes in the industry's very best AAMA 2605 powder-coating for the longest lasting color.