The ornamental design for a stackableconductivetray, as shown and described.
FIG. 1 is a top and side perspective view.
FIG. 2 is a side elevation view, with the opposite side elevation view being a mirror image thereof.
FIG. 3 is a front elevation view, with the rear elevation view being a mirror image thereof;
FIG. 4 is a top plan view.
FIG. 5 is a bottom plan view.
FIG. 6 is a top and side perspective view, but illustrating another similarly designed stackable conductive tray stacked on top of the stackable conductive tray for environmental purposes, with the upper stackable conductive tray being shown in broken lines for illustrative purposes only and forming no part of the claimed design; and,
FIG. 7 is a top and side perspective view, but illustrating another similarly designed stackable conductive tray stacked underneath the stackable conductive tray and a cutting board stacked on top of the stackable conductive tray for environmental purposes, with the lower stackable conductive tray and the cutting board being shown in broken lines for illustrative purposes only and forming no part of the claimed design.