True or False: The return jamb is the side of the entrance that the door closes against.

The statement is false because the return jamb is typically defined as the vertical side of an elevator entrance that serves as the frame for the door and provides a surface against which the door closes from the opposite side. In contrast, the side against which the door closes is referred to as the "strike jamb." Understanding this terminology is crucial for anyone involved in elevator door and entrance installation, as it directly impacts how the door assembly is fitted and functions within the overall elevator system.

In instances of single-door configurations, the terminology and roles of the jambs remain the same, as the door will still close against the strike jamb. Thus, while the statement may seem to hold in specific situations, it does not accurately define the general role or definition of the return jamb across varying entrance types.