US D598305 S1
The ornamental design for a thermostat faceplate, as shown and described.
FIG. 1 is a front perspective view of the thermostat faceplate.
FIG. 2 is a front side view thereof.
FIG. 3 is a bottom side view thereof, which is identical to the top side view; and,
FIG. 4 is a right side view thereof, which is identical to the left side view.
The rear of the thermostat faceplate is not part of the claimed design.
Characteristic features of the design that are considered b applicant to a feature of novelty or nonobvious include the curved indentation beneath the opening.