Fire doors are the silent guardians of our buildings. In the event of an emergency, their ability to self-close and securely latch can make the difference between a contained incident and a catastrophic loss. At the heart of this functionality lies a small but critical component: the latch bolt. Specifically, the "throw"—the distance the bolt extends into the strike plate—is a dimension that is rigorously regulated by safety standards.

When an emergency strikes, every second counts. Whether it is a fire, a security threat, or a power outage, the ability to evacuate a building quickly and safely is not just a convenience—it is a life-saving necessity. This is where the specific mechanics of your doors come into play. You have likely pushed through hundreds of these doors in shopping malls, hospitals, and schools without giving them a second thought. But for building managers and architects, understanding the hardware that makes this possible is critical.