The ornamental design for a wall mounted dualdispenser, as shown and described.
FIG. 1 is a perspective view of a wall mounted dual dispenser showing our new design;
FIG. 2 is another perspective view of FIG. 1 showing the cover in an open configuration;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a back elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a left side elevation view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken line showing of wall mounted dual dispenser is included for the purpose of illustrating portions of the “article” and forms no part of the claimed design.