<p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Calibri;mso-fareast-font-family:'MS Mincho';
mso-bidi-font-family:'Times New Roman';font-size:11.0000pt;">This guide explains NFPA 80 clearance requirements at fire door heads, jambs, meeting edges and bottoms. It covers material-specific limits, accurate measurement methods, common causes of uneven gaps, approved repair considerations and the relationship between hinges, closers, coordinators, thresholds and seals in maintaining a functional fire door assembly.<o:p></o:p></span></p>

This guide explains NFPA 80 fire door hardware requirements for hinges, closers, locks, latches, exit devices, coordinators and accessories. It shows how listings, installation details, positive latching, closing sequence, inspection and maintenance affect a complete fire door assembly, while helping project teams select compatible commercial hardware without treating one certified component as proof of total opening compliance.

NFPA 80 establishes requirements for installing, inspecting, testing and maintaining fire doors and other opening protectives. This guide explains the standard’s scope, its relationship with building codes and product listings, the essential functions of a fire door assembly, and key considerations when selecting compatible commercial door hardware.

This article explains how NFPA 80 requirements apply to fire door assemblies in commercial buildings, covering design coordination, listed components, installation, operation, inspection and ongoing maintenance. It also helps architects, contractors, procurement teams and facility managers understand their responsibilities when specifying and maintaining fire doors and compatible listed hardware throughout the building lifecycle.

Fire-rated doors are designed to slow the spread of fire and smoke, helping protect building occupants and property during emergencies. However, the performance of a fire-rated door depends not only on the door itself but also on every component installed within the assembly. Among these components,

As a factory deeply rooted in the life safety industry, we at D&D Hardware understand that a fire door is only as reliable as its locking mechanism. When a building is engulfed in smoke and extreme heat, the difference between containment and catastrophe often rests on a few ounces of steel.We are n

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When specifying access solutions for commercial buildings, hospitals, or multi-family housing, one question comes up repeatedly: What does UL 10C certification actually mean for a fire rated mortise lock?As a fire door hardware manufacturer, I have seen too many spec sheets list certifications witho

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Specifying door hinges for a commercial project means more than picking a finish or a material. It means selecting the right ANSI/BHMA grade—because that single number determines how long the hinge will last, how much wear it can withstand, and whether it meets the performance requirements for the b