FIG. 1 is a top, front, and left perspective view of my new design for a hollow announcement box in a closed configuration;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a right elevational view thereof, the left elevational view being a mirrored image;
FIG. 6 is a front elevational view thereof;
FIG. 7 is a front elevational view of my new design for a hollow announcement box in an open configuration;
FIG. 8 is a right elevational view thereof, the left elevational view being a mirrored image;
FIG. 9 is a rear elevational view thereof; and,
FIG. 10 is a top, rear, and right perspective view thereof.
The broken lines indicating words and logos depict environmental subject matter, and form no part of the claimed design.