Exhaust port opening-and-closing unit

Description

FIG. 1 is a first perspective view of an exhaust port opening-and-closing unit showing our new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken lines depict portions of the exhaust port opening-and-closing unit that form no part of the claimed design.

Claims

The ornamental design for an exhaust port opening-and-closing unit as shown and described.