The ornamental design for a device for painting or cleaning behind a toilettank, as shown and described.
FIG. 1 is a front perspective view of a device for painting or cleaning behind a toilet tank of our invention in use behind a toilet shown in phantom with the phantom arrows showing a possible direction for use, the figure forming no part of this invention;
FIG. 2 is a top plan view of a device for painting or cleaning behind a toilet tank of our invention based on FIG. 1;
FIG. 3 is a bottom plan view of a device for painting or cleaning behind a toilet tank of our invention based on FIG. 2;
FIG. 4 is a side view of a device for painting or cleaning behind a toilet tank of our invention based on FIG. 1;
FIG. 5 depicts a side view of a device for painting or cleaning behind a toilet tank as a reversed and rotated view of FIG. 4;
FIG. 6 is an end plan view of a device for painting or cleaning behind a toilet tank of our invention based on FIG. 2; and,
FIG. 7 is a rear plan view an end plan view of a device for painting or cleaning behind a toilet tank of our invention as a reversed and rotated view of FIG. 6.