FIG. 1 is a front isometric view of the diffuser;

FIG. 2 is a back isometric view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a first side elevational view thereof;

FIG. 5 is a back elevational view thereof; and,

FIG. 6 is a plan view thereof.

FIG. 7 is provided for context only and forms no part of the claimed design. Also, structures shown in broken lines form no part of the claimed design.

The structures shown in broken lines are for illustrative purposes only and form no part of the claimed design.