What is required to be installed in a pair of French doors?

In a pair of French doors, it is essential to install an astragal stop to ensure proper functionality and security. The astragal stop is a vertical component that is typically mounted on one of the doors, aligning with the opposite door when they are closed. Its primary functions include preventing air infiltration and providing a seal to enhance energy efficiency.

Moreover, the astragal stop helps to secure the two doors together, which is particularly important for maintaining privacy and security. It also plays a significant role in the overall aesthetics of the door assembly, contributing to a finished look by concealing the gap between the doors.

While other components, such as mortise locks, jamb extensions, and passage locksets, serve specific purposes, they are not fundamental to the basic installation of French doors. Mortise locks can enhance security, but the astragal implementation is critical for ensuring that the doors operate correctly and maintain a tight seal. Jamb extensions relate to the framing of the opening, and passage locksets are used for operational purposes but do not address the sealing and alignment needs of French doors directly. Thus, the installation of an astragal stop is a requirement to ensure proper closure and functionality of French doors.