A UL 10C fire-rated door lock is a mortise lock that has been independently tested and certified to maintain structural and functional integrity under positive-pressure fire conditions, in compliance with ANSI/BHMA A156.13 Grade 1 performance standards. Choosing the right model requires matching the

UL 10C and UL 10B are two distinct fire-test standards for door assemblies used in the United States. UL 10C applies to positive pressure fire door assemblies, while UL 10B applies to neutral pressure conditions. For most modern commercial buildings, UL 10C is the required standard—and the locks ins

Grade 1 Commercial Security SolutionsEngineered for high-traffic commercial and institutional environments. ANSI/BHMA certified with UL 10C 3-hour fire rating, built from SUS304 stainless steel for uncompromising durability and security.BHMA CertifiedANSI Grade 1UL 3-Hr Fire Rated

Building safety relies heavily on small components that most people overlook on a daily basis. One of the most critical elements of any commercial or residential building is the fire door lock. When a severe emergency strikes, standard hardware easily melts, warps, or fails under extreme heat.