Oldcastle BuildingEnvelope® (OBE) is North America's leading fully integrated manufacturer and fabricator of architectural glass, aluminum glazing systems, and hardware.

As the industry's only single-source partner for complete building envelopes, OBE provides innovative, high-performance solutions including curtain walls, storefronts, entrances, windows, skylights, sun controls, and advanced security/storm-resistant glass.

With services like OBE360 Design Assist and a focus on energy efficiency, sustainability, bird-friendly options, and superior thermal performance, OBE delivers expert guidance and reliable products tailored for education, multifamily, and commercial projects.