Steel Door Institute
About the Steel Door Institute
The Steel Door Institute (SDI) is a voluntary, unincorporated business association. It aims to promote the safe and productive use of steel doors and frames in the construction industry.
Representatives of SDI member companies are responsible for creating and publishing manufacturing, quality and performance Standards. SDI tests steel doors and frames for strength, quality, consistency, security, weather and fire resistance, wear and tear and longevity. This means consumers can trust the quality, safety and resilience of steel doors and frames bearing the SDI logo.
Intertek Inform: Your Gateway to SDI Standards
Intertek Inform makes it easy for businesses to buy SDI Standards from our website, giving convenient access to globally recognised guidelines set by the Steel Door Institute. Use our Standards Store to access building codes and Standards relating to the use of steel doors and frames in developments and construction projects.
On our website, you can purchase individual SDI Standards in digital PDF or printed (hardcopy) formats. Or you may wish to manage your Standards with i2i, our secure, configurable, cloud-based platform, made available through our subscription service.
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Frequently Asked Questions
Below are some of the most common questions about the Steel Door Institute.
The SDI is a not-for-profit business association. Its goal is to serve architects, specifiers, building owners and construction professionals who use SDI steel doors and frames in their work. The SDI offers these groups technical guidance and support, to ensure compatibility with other building products used in conjunction with steel doors and frames.
The organisation carries out extensive testing on steel doors and frames, to ensure they achieve peak safety and quality Standards. Testing is done using top US testing labs including UL, Intertek, National Fire Protection Association (NFPA), American National Standards Institute (ANSI) and American Society for Testing and Materials (ASTM).
SDI also works alongside industry associations for related products. This includes the Door & Hardware Institute (DHI), Construction Specifications Institute (CSI) and the Builders Hardware Manufacturers Association (BHMA). Steel doors and frames manufactured by SDI member companies are accessible via a network of US distributors.
Relevant codes relate to fire doors, windstorms, accessibility, energy conservation, sustainability, building Standards and design Standards.
SDI is a voluntary, unincorporated, not-for-profit, member-based organisation, under the leadership of a managing director. It is located in Westlake, Ohio, US.