Oldcastle Glass is a supplier of building solutions, including curtain walls, architectural windows, storefronts, entrance doors and fabricated architectural glass. It offers insulating glass units, heat-treated and laminated glass, and curtain and window wall systems. The company s projects include Getty Center, Mary Baker Eddy Library, Hawaii Convention Center, Genzyme Center, Sky Las Vegas and LAX Gateway. Oldcastle Glass operates offices in more than 50 locations throughout North America and employs over 4,500 people. It is a subsidiary of CRH, which is one of the world's largest building products companies. CRH operates in more than 25 countries worldwide and maintains a staff of over 80,000 employees. Oldcastle Glass maintains a location in Shawnee, Okla.