The ornamental design for a clothesdryer vent exhaust for a buildingexteriorwall, as shown and described.
FIG. 1 is a front perspective view of the present invention, showing the new design of the clothes dryer exhaust vent for a building exterior wall;
FIG. 2 is a back perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a back elevational view thereof;
FIG. 5 is a first side elevational view thereof;
FIG. 6 is a second side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines shown in the figures are for the purpose of illustrating portions of the clothes dryer exhaust for a building exterior wall and form no part of the claimed design.