The ornamental design for a portion of an overheadgarage door facade, as shown and described.
FIG. 1 is a front elevational view of a portion of an overhead garage door facade showing my new design in a closed configuration;
FIG. 2 is a front elevational view thereof showing a portion of my design in a partially open configuration;
FIG. 3 is a front elevational view of a portion of an overhead garage door facade showing a second embodiment of my new design in a closed configuration; and,
FIG. 4 is a front elevational view thereof showing a portion of my design in a partially open configuration.
The broken line showing of the handles is for illustrative purposes only and forms no part of the claimed design. The broken line showing of the garage building structure in FIGS. 1 through 4 and the vehicles shown in FIGS. 2 and 4 are for illustrating an environment of the design and form no part of the claimed design.