Atrium Windows & Doors-Cornerstone Building Brands, 7129 Old US Highway 52, Lexington, NC 27295, US

Atrium Windows and Doors, in Lexington, N.C., has the capacity to produce 1 million units annually at its 480,000-square-foot manufacturing plant. In addition, it is only one of a handful of manufacturers in the United States with in-house vinyl extrusion capabilities. Atrium Windows and Doors is a subsidiary of Atrium Companies. Atrium Companies serves the new construction, repair and remodeling markets with a portfolio of products marketed under the Atrium brand name, as well as HR Windows, Danvid Window Company, Superior Engineered Products Corporation, MD Casting, RG Darby Company, Dow-Tech Plastics and Thermal.

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Walker & Associates Inc