The ornamental design for set of legs for a barbecuegrill, as shown and described.
FIG. 1 is an upper perspective view of set of legs for a barbecue grill showing my new design.
FIG. 2 is a front elevation view thereof;
FIG. 3 is rear elevation view thereof;
FIG. 4 is a side elevation view thereof;
FIG. 5 is an opposite side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is an upper perspective view of the set of legs for a barbecue grill shown attached to a barbecue grill.
The features presented in broken lines are for purposes of illustrating environmental structure and portions of the set of legs for a barbecue grill that form no part of the claimed design.