Generation 4 Folding Glass Walls is a platform of eight different systems designed to meet requirements for a wide array of project types—all with similar aesthetics, features and performance—for both commercial and residential applications, interior or exterior. Now, choice is made easier as specifiers use the system base that best fits the project. Being a customizable product family, Generation 4 offers multiple sill and hardware choices, and flexibility through customized configurations—all in three material choices—aluminum, solid wood or clad. Technology developments include a multifunctional thermal break design offering the slimmest, most energy-efficient bi-fold door available.