Armstrong World Industries, Inc. designs, innovates, and manufactures interior and exterior architectural applications, including ceilings, specialty walls and exterior metal solutions. It also manufactures ceiling suspension system (grid) products. Its segments include Mineral Fiber and Architectural Specialties. The Mineral Fiber segment produces suspended mineral fiber and soft fiber ceiling systems. Its mineral fiber products offer various performance attributes, such as acoustical control, rated fire protection, and energy efficiency. The Architectural Specialties segment produces, designs and sources ceilings, walls and other interior and exterior architectural applications for use in commercial settings. Its products are available in metal, felt, wood, resin, wood fiber and glass-reinforced-gypsum in various colors, shapes and designs. It sells standard, premium and customized products. This segment of products is sold primarily to resale distributors and direct customers.