The Hollow Metal Manufacturers Association (HMMA) is a division of the National Association of Architectural Metal Manufacturers (NAAMM), and publishes more than two dozen reference documents related to hollow metal doors and frames.

One of these publications – HMMA 850-14 – has recently been updated, and is available as a free download from the HollowMetal.org website.

• Have you ever needed to know what fire rating is needed for a fire door assembly in a particular wall?  See page 1-3.
• Questions about positive pressure testing or smoke control rated assemblies?  That section starts on page 1-5.
• How about labels (page 1-8), field modifications (1-11), limitations on glazing (1-14), or hardware requirements (2-1)?

Download your copy now, so you have it on-hand when questions arise.

Thank you to Karpen Steel for posting the link to HMMA 840-14 on their Facebook page!

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