Air Curtain Diffuser

FIG. 1 is a front and side perspective view of an air curtain diffuser according to my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The broken line shown is for the purpose of illustrating portions of the air curtain diffuser that forms no part of the claimed design.