What is claimed is the ornamental design for a plunger cover, as shown and described.
FIG. 1 is a left side elevational view of a plunger cover;
FIG. 2 is a right side elevational view of the plunger cover of FIG. 1;
FIG. 3 is a top plan view of the plunger cover of FIG. 1;
FIG. 4 is a bottom plan view of the plunger cover of FIG. 1;
FIG. 5 is a front elevational view of the plunger cover of FIG. 1;
FIG. 6 is a rear elevational view of the plunger cover of FIG. 1;
FIG. 7 is a perspective, environmental view of the plunger cover of FIG. 1 in a closed configuration;
FIG. 8 is a perspective, environmental view of the plunger cover of FIG. 1 in an open configuration; and,
FIG. 9 is a perspective view of the plunger cover of FIG. 1 in an open configuration.
The broken lines showing an article upon which the plunger cover is installed are included for the purpose of illustrating environment and form no part of the claimed design.