The ornamental design for a disposable collapsiblecatlittertray, as shown and described.
FIG. 1 is a front perspective view of the disposable collapsible cat litter tray in a partially collapsed position showing a removable front portion for the doorway in dashed lines;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a side elevation view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear elevation view thereof;
FIG. 8 is a front perspective view thereof showing the cat litter tray in an expanded position with the doorway portion removed; and,
FIG. 9 is a rear perspective view of FIG. 8.
The dashed lines on FIGS. 1 and 4 represent perforations for removing the doorway.