Mounting Structure

FIG. 1 is an isometric view of a front, top, and right side of an ornamental design for a mounting structure;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The dash-dash-dash lines are included for the purpose of illustrating portions of the mounting structure that form no part of the claimed design. The break lines are included for the purpose of illustrating unclaimed portions of varying length.