Mountable Light

FIG. 1 is a first perspective view of an ornamental design for a mountable light;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a view of a first side thereof;

FIG. 4 is a view of a second side thereof;

FIG. 5 is a view of a third side thereof;

FIG. 6 is a view of a fourth side thereof;

FIG. 7 is a view of a first end thereof; and,

FIG. 8 is a view of a second end thereof.

Broken lines in the drawing indicate parts of the mountable light that form no part of the claimed design.