The ornamental design for a wallfixprotectionbox, as shown and described.
FIG. 1 is a top left side perspective view of the wallfix protection box of my new design,
FIG. 2 is a top plan view thereof,
FIG. 3 is a front elevation view thereof,
FIG. 4 is a left side elevation view thereof; the right side elevation view is the mirror image of the left side elevation view; and,
FIG. 5 is a front elevation view thereof with the left and right front doors shown in their open state. The rear elevation is substantially flat and unadorned.