Established in 1984, Glass Systems Inc. is a subcontracting company, specializing in commercial metal framing and glazing. Based in Lithonia, Ga., the company provides a range of glass/metal exterior frames, windows and doors. It also provides blast/fire/hurricane resistant systems, curtain walls, storefronts, window walls, aluminum windows and stainless steel doors. Its project portfolio includes condos/hotels, commercial complexes, educational institution, retail outlets, government offices, health care centers and churches. Glass Systems Inc. also offers several specialty products, such as aluminum panels, mirrors and terracotta sunscreens.