The ornamental design for a wallniche with centeringdevices and spacers, as shown and described.
FIG. 1 is a top perspective view of a wall niche with centering devices and spacers;
FIG. 2 is an enlargement of a centering device of the wall niche of FIG. 1;
FIG. 3 is an enlargement of a spacing device of the wall niche of FIG. 1;
FIG. 4 is a top view of the wall niche;
FIG. 5 is an enlargement of a spacer of the wall niche of FIG. 4;
FIG. 6 is a view of the right hand of the wall niche;
FIG. 7 is an enlargement of a centering device of FIG. 6;
FIG. 8 is a front view of the wall niche;
FIG. 9 is a bottom view of the wall niche;
FIG. 10 is a back view of the wall niche; and,
FIG. 11 is a left hand view of the wall niche.
The broken lines shown in the figures represent portions of the wall niche with centering devices and spacers that form no part of the claimed design. The broken lines forming a circle shown in FIGS. 1-7 represent an outline that does not form part of the claimed design.