Knock Box

FIG. 1 is a front left top perspective view of the knock box, showing my new design;

FIG. 2 is a rear right top perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear 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 lines shown in the drawings depict a knock bar that forms no part of the claimed design.