Triple Grate Design for a Gas Burner

FIG. 1 is a front perspective view of a triple grate design for a gas burner according to a first embodiment showing my new ornamental design;

FIG. 2 is a top view thereof;

FIG. 3 is a front perspective view of a triple grate design for a gas burner according to a second embodiment showing my new ornamental design;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a left side view thereof; and,

FIG. 9 is a right side view thereof.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.