Oldcastle Glass is one of the leading suppliers of architectural glass and aluminum glazing systems. The company offers curtain window walls, windows, storefront systems, doors and skylights. Oldcastle Glass provides a range of testing and simulation services. Its products are available under the Stackwall, Bentemp and Montage services. Oldcastle Glass is a subsidiary of CHR, which operates in more than 30 countries and has a work force of over 92,000 employees. Established in 1970, CHR offers various types of building materials. Additionally, it provides online information about its financial position. Oldcastle Glass maintains one of its locations in Chicago.