US D274904 S
FIG. 1 is a side perspective view of a mounting ring for prefabricated fire wall lead-in showing our new design;
FIG. 2 is an opposite side perspective view thereof; and
FIG. 3 is an elevational view thereof as seen from the bottom of FIG. 1;
FIG. 4 is an elevational view thereof on an enlarged scale as seen from the top of FIG. 1.