KOR‑Glass is a trusted provider of fire-rated commercial door installation throughout Southern California. Our fire doors help businesses meet critical safety codes while maintaining operational functionality and visual appeal. From small businesses to large industrial properties, we install and maintain doors that meet NFPA 80, California Building Code, and OSHPD fire-resistance standards. Our solutions not only protect people—they limit liability and help facilities pass inspections with confidence.

Installing fire-rated commercial doors isn’t just about meeting current safety requirements—it’s about investing in your building’s long-term resilience and liability protection. With fire-rated steel and glass door systems, you reduce the risk of fire spread, protect employees and tenants, and stay compliant with ever-evolving regulations. KOR‑Glass is the trusted name for commercial fire door installation in Ontario, CA, and surrounding cities. We bring expertise, professionalism, and peace of mind to every project.