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Armstrong World Industries, Inc. is a global leader in the design and manufacture of floors, ceilings and cabinets with a focus on innovation, design and environmental sustainability. Based in Lancaster, PA, Armstrong operates 35 plants in eight countries and has approximately 10,000 employees worldwide. The company’s global acoustical ceiling and suspension systems business is 90 percent commercial – offices, healthcare, education, retail, transportation and other segments – and 10 percent residential. Established in 1860, Armstrong celebrated its 150th anniversary in 2010.