Welcome to HMMA, a Division of NAAMM
The Hollow Metal Manufacturers Association (HMMA) promotes
the advantages of hollow metal products.
HMMA is a leader in:
- Developing performance standards and specifications
- Creating and testing products
- Providing progressive solutions
Established in 1969, HMMA is a voluntary, non-profit business association composed of more than 60 member companies throughout North America. HMMA is the largest of the six divisions of the Chicago-based National Association of Architectural Metal Manufacturers (NAAMM), an organization established in 1938, with roots reaching back to 1907.
Known throughout the consutruction industry for their strength, durability, design flexibility and suitability in demanding settings, hollow metal steel doors and frames remain the logical choice for discerning architects, engineers and specifiers who demand high quality and cost-effective solutions.
The Hollow Metal Manufacturers Association (HMMA) welcomes you to our website. Here you will learn more about the mandate of HMMA, understand the many advantages of hollow metal door and frame products, access our acclaimed standards and guide specification documents and identify the HMMA members nearest you. As many others have found, spending time on our website is a very worthwhile investment.
Click here to download the Why Steel? – Performance Study of Steel Doors and Frames Compared to Other Door Materials and to learn more about Why Steel?
Mandate To Serve
Although HMMA is a group composed of companies that manufacture, distribute and promote the use of hollow metal door and frame products, its principal mission truly looks outward to serve the building construction industry by creating the conditions essential for the production of high-quality, high-performance hollow metal products.
With the support of NAAMM, member firms, and dozens of committed volunteers, HMMA achieves this key mission in many ways. HMMA develops, maintains and distributes technical information on hollow metal products, principally in the form of state-of-the-art technical specifications and detailed standards: documents that provide credible, objective benchmarks that specifiers have come to trust.
HMMA also produces and distributes periodic technical reports and updates, documents that stem from our collective experience and on-going commitment to find hollow metal innovations and advancements and disseminate this information industry-wide. HMMA involves itself in and communicates the results of joint testing of fire doors and frames.