Armstrong World Industries Inc. designs, innovates, and manufactures ceiling and wall solutions in the Americas. The company manufactures and sources products made of numerous materials, including mineral fiber, fiberglass, metal, felt, wood, resin, wood fiber, and glass-reinforced-gypsum. It also manufactures ceiling suspension system (grid) products through a joint venture with Worthington Industries, Inc., called Worthington Armstrong Venture (WAVE). The company's reportable operating segments include Mineral Fiber, Architectural Specialties, and Unallocated Corporate. A majority of its revenue is generated from the Mineral Fiber segment, which produces suspended mineral fiber and fiberglass ceiling systems. Geographically, it derives maximum revenue from the United States.