The FHC G52 Series heavy-duty, thermally broken, bi-folding glass door system allows for wide, unobtrusive openings for outdoor views. In the closed position, the G52 Series provides a weathertight seal and resistance to ever-changing conditions, while allowing in natural light. Several configuration options are available to complement many architectural design styles. The system is designed to move smoothly and effortlessly. The FHC G52 Series bi-folding glass door system comes with a two-point locking system.