GMS Inc. distributes wallboard, ceilings, steel framing and complementary construction products in the United States and Canada. The company offers ceilings products, including suspended mineral fibers, soft fibers, and metal ceiling systems primarily used in offices, hotels, hospitals, retail facilities, schools, and various other commercial and institutional buildings. It also provides steel framing products, such as steel tracks, studs, and various other steel products used to frame the interior walls of a commercial or institutional building; and insulation, lumber and other wood products, ready-mix joint compound, and various other interior construction products, as well as ancillary products comprising tools, fasteners, and safety products.