FIG. 1 is a top perspective view of a first embodiment of a diffuser;

FIG. 2 is a top plan view of the diffuser of FIG. 1;

FIG. 3 is a bottom plan view of the diffuser of FIG. 1;

FIG. 4 is a top perspective view of a second embodiment of a diffuser;

FIG. 5 is a top plan view of the diffuser of FIG. 4; and,

FIG. 6 is a bottom plan view of the diffuser of FIG. 4.

The subject matter shown in the figures above in dashed lines forms no part of the claimed invention. Further, the bottom views herein form no part of the claimed invention.