Navigating door and hardware requirements, particularly for fire door applications, is not always clear. The National Fire Protection Association (NFPA) published a report in April titled, ‘Influence of Gap Sizes Around Swinging Doors with Builders Hardware on Fire and Smoke Development’, that helps writers and users understand the influences of gaps in the door opening. A link to the report can be downloaded FREE here.
National Guard Products - NGP - have provided approved solutions to gap issues since 1935. No other company in the industry provides product, support, service and delivery like NGP. Let them prove it. Here is a link to a 2-page brief - ‘Gap Solutions for Excessive Fire Door and Frame Clearance’.
If you wish to understand how to regain lost fire door ratings, download the Gap Solutions catalog HERE.