By how much should a closed swing door overlap the top and sides of the frame?

A closed swing door should overlap the top and sides of the frame by 1/2 inch to ensure proper sealing and functioning. This measurement allows for a sufficient overhang that helps to reduce gaps between the door and the frame, which is essential for energy efficiency and security. Additionally, a 1/2-inch overlap minimizes the potential for drafts and enhances the overall appearance of the installation by providing a clean, finished look.

This standard overlap ensures that when the door is closed, it sits securely within the frame, helping to support the door's alignment and preventing it from sagging or becoming misaligned over time. The measurement is also practical in accommodating slight variances in frame sizes or settling that may occur in structures. Adhering to the 1/2-inch overlap provides an optimal combination of functionality and aesthetics in elevator door installations.