News

The following new ANSI/NAAMM standard is currently being revised: The development of the standard was announced in both the ANSI Standards Action and the NAAMM website on 6/11/2026.  When the dra…

The following ANSI/NAAMM Standard is under revision or proposed for reaffirmation and is available for public comment. Draft standrad for public review and comments: Please check back periodically for…

The following new ANSI/NAAMM standard is currently being developed: The development of the standard was announced in both the ANSI Standards Action and the NAAMM website on 10/20/23. When the draft of…

The following ANSI/NAAMM standards are currently being considered for revision or have a revision in progress: The pending revisions were announced in the ANSI Standards Action on 5/31/24 and 10/06/23…

June 20, 2025 The following ANSI/NAAMM standard is currently being considered for revision or has a revision in progress: The pending revision will be announced in the ANSI Standards Action on 06/27/2…

The following ANSI/NAAMM standard is currently being considered for revision or has a revision in progress: The pending revision will be announced in the ANSI Standards Action on 06/27/2025.  Whe…

At the 2024 HMMA Annual Fall Meeting, we saw 24 HMMA members from 20 different companies attend the activities on the Magnificent Mile in Chicago. If you weren’t able to make it, we created this recap…

If you look at recent commercial building projects like schools, hospitals, office buildings, or government facilities, you’ll notice more of them are using steel doors and frames. Why is th…

Today, more commercial building projects want effective sound control incorporated in their design and construction. By lowering noise transmission throughout a space, the com…

HMMA’s mission is to move the hollow metal industry forward by being a trusted source of information. Backed with the support of industry experts and member companies, HMMA de…

The Press Release on NAAMM’s Statement to Industry Regarding Public Comment on the proposed revisions to ANSI/NAAMM HMMA 863, Guide Specifications for Detention Security Hollow Metal Doors and F…

Key Actionable Topics Covered! Everyone at HMMA is proud to host another unforgettable member meeting. On the beautiful sands of Florida’s St. Pete Beach, 26 HMMA members met and discus…

The Press Release on NAAMM’s Statement to Industry Regarding Public Comment on the proposed revisions to ANSI/NAAMM HMMA 801, Glossary of Terms for Hollow Metal Doors and Frames, can be viewed h…

The following ANSI/NAAMM standard is currently being considered for revision or has a revision in progress: The pending revision was announced in the ANSI Standards Action on 5/10/24.  When the d…

At HMMA, we’re hollow metal industry experts. A large part of our mission is creating specifications and standards for professionals that can be used …

Fire-rated hollow metal doors and frames provide immense value to commercial building projects since they help slow the spread of a fire. It’s a large part of why buildin…

When you’re in the planning stage of a commercial building project, it’s common to have the need for custom entryways and doors. Whether it’s a hospital, school…

Fire-rated assembly doors play a vital role for commercial buildings. These doors not only save lives by slowing down the spread of smoke and fire, but also provide a safer way for people to…

A variety of commercial building projects, entryways and exterior doors need special consideration when it comes to doors. You need to factor in how they function, the level of security that’s require…

For a variety of commercial building projects, there’s a key decision that needs to be made about what type of material for doors and entryways. At first glance, materials…

For school building projects, versatility is often the name of the game when it comes to the materials used. If you visit a school near you, chances are you’ll find steel doors and frames being u…

Across all types of residential and commercial building projects, specifications are the guiding force behind the materials that are chosen. Since companies, organization, and governing bodi…

While there are a variety of building materials that are used for entryways, we’re here to give you a comprehensive look at steel. You might already know that steel doors and frames are know…

Comparing Steel vs Wood Doors and Frames

Detention Hollow Metal Exceeds the Bar

In the planning stages of many building projects, there comes a point where you must select what types of materials are going to be used. Key aspects of the project require you to examine specificatio…

While steel doors and frames are known for their durability, like many other building products, they’re not immune to misconceptions coming about. As a longstanding not for profit organizati…

The Key Differences Between Steel and Wood Doors Is Steel Really Safer than Wood?  For decades, HMMA and its member companies have been trusted sources of information for hollow metal doors and f…

HMMA-830-02 Hardware Selection for Hollow Metal Doors and Frames The hardware used not only determines how well a door functions, but is also an important factor in the working life of the opening. Am…

The term “hollow metal work” refers to many of those components of building construction that are made of cold formed sheet metal. With the exception of single family residences, there are…

HMMA-810 TN02-17 Thermal Bow Design professionals, building owners, and project managers need to be aware of a potential door condition known as “Thermal Bow”. “Thermal Bow” is primarily the resu…

HMMA-820 TN03-07 Guidelines for Glazing of Hollow Metal Transoms, Sidelights and Windows Hollow metal transoms, sidelights and windows are an excellent choice at exterior locations. Proper application…

Continuously Welded Frames There are always multiple ways to say something and communicate 90% non-verbally. When it comes to the construction of hollow metal, the words used to specify the type of fr…

NEWS RELEASE:Updated Standard Released: HMMA 850-14“Fire-Protection and Smoke Control Rated Hollow Metal Door and Frame Products” This updated standard is a detailed overview of the portfo…