Hollow Metal Manufacturers Association (HMMA)
Hollow Metal Door Manufacturers| HMMA

Welcome to HMMA, a Division of NAAMM

MISSION: HMMA develops standards, conducts product performance testing and delivers education to promote the use of hollow metal doors and frames.

WHY STEEL: 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?



Updated Standard Released: HMMA 850-14

"Fire-Protection and Smoke Control Rated Hollow Metal Door and Frame Products"

Glen Ellyn, Illinois– The new fifth edition of HMMA850-14 has been added to the Hollow Metal Manufacturers’ Association’s website @ http://www.hollowmetal.org.

This updated standard is a detailed overview of the portfolio of fire rated products available thru HMMA member companies. Design Professionals have used HMMA850 as a reference guide for decades.

Section #1: General information
An overview of fire door testing requirements and applications meeting NFPA Pamphlet 80 and IBC (The International Building Code).

Section #2: Hardware for Swinging Hollow Metal Fire Doors
An overview of Builders’ Hardware requirements as they relate to listed Hollow Metal Fire Door Assemblies

Section #3: Hollow Metal Fire Doors and Frame Product
A detailed overview of the current of Hollow Metal listed Fire Door and Frame openings including construction features.

Section #4: Reference and Support Materials
List of all related publications

Refer to the HMMA Technical Publication website for no charge downloads of HMMA850-14 and all HMMA standards.