Armstrong World Industries operates primarily through two business segments: Mineral Fiber and Architectural Specialties. The Mineral Fiber segment produces suspended mineral fiber and fiberglass ceiling systems, while the Architectural Specialties segment focuses on specialty ceilings, walls, and exterior metal solutions made from materials like wood, felt, and architectural resin. The company also manufactures ceiling suspension system (grid) products through its WAVE joint venture with Worthington Enterprises. Geographically, AWI primarily serves markets in the United States, Canada, and Latin America. Its products are sold to resale distributors, ceiling system contractors, wholesalers, and large home centers for use in commercial construction sectors such as office, education, healthcare, and retail, as well as residential renovation.