GMS Inc. is a distributor of wallboard and suspended ceilings systems, or ceilings. The Company provides a product offering of over 20,000 stock keeping units (SKUs) of wallboard, ceilings and complementary interior construction products for interior contractors. It offers steel framing and ancillary products for its customers. Its Wallboard is a building product for interior and exterior walls and ceilings in residential and commercial structures. Its ceilings product line consists of suspended mineral fiber, soft fiber and metal ceiling systems primarily used in offices, hotels, hospitals, retail facilities, schools and a range of other commercial and institutional buildings. Its steel framing product line consists of steel track, studs and various other steel products used to frame the interior walls of a commercial or institutional building. It supplies complementary products, including insulation, ready-mix-joint compound and various other interior construction products.