Casing with mount

FIG. 1 is a front right perspective view of a casing with mount showing our new design;

FIG. 2 is a rear, left perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines showing a cord depict environment and form no part of the claimed design. The remaining broken lines shown in the drawings depict portions of the casing that form no part of the claimed design.