How much must horizontal sliding doors overlap the entrance frame?

The correct amount of overlap for horizontal sliding doors over the entrance frame is 5/8 inch. This specific measurement is crucial for ensuring proper function and safety of the elevator door system. An overlap of 5/8 inch provides adequate coverage to help prevent gaps that could lead to safety hazards, such as the potential for objects or individuals to become trapped in the door area. Additionally, the overlap contributes to mitigating drafts, enhancing the thermal performance of the elevator shaft, and ensuring that the door operates smoothly without obstruction. This standard is established to balance both security and functionality within the elevator door system.