Air Purification Unit

FIG. 1 is a perspective view of an air purification unit;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Broken lines and unshaded areas adjacent to them shown in the figures depict portions of the air purification unit that form no part of the claimed design.