The ornamental design for a mount for storagebox, as shown and described.
FIG. 1 is a perspective end view of a mount for storage box showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a top view thereof; and,
FIG. 5 is a bottom view thereof.
The instant invention is a mount used to attach a parallepipedal and upwardly open storage box to a rack or wall. The mount fits with the back wall of the box at any of several different vertically offset positions therealong and suspends the box so that access can be had to the box's contents through a swing-out front wall of the box. The mount and box are typically used in a warehouse with vertical rows of the boxes holding merchandise. The attached views (30686MountInstalled.pdf) show in side, back and rear perspective views the mount secured to such a box.