The WA67 is a folding-glass wall system that mounts extruded aluminum cladding to a solid wood core with a spacer bar to secure the materials together. This allows different expansion rates between materials to avoid cracking for durability in reportedly any climate. The low-maintenance extruded aluminum cladding is available in 50 standard color choices, along with a solid-wood interior available in Pine, Spruce, Meranti, and Sapeli Mahogany. Custom color matching and other wood species are also available. The aluminum-clad system is engineered to perform in heavy wind and rain environments and has a 2 5/8-in.-thick door panel with a rain-screen clad exterior and a solid wood interior.