Frame for respiratory mask

FIG. 1 is a perspective view of a frame for respiratory mask according to a first embodiment of our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof, with the left side view thereof being a mirror image;

FIG. 7 is a perspective view of a frame for respiratory mask according to a second embodiment of our design;

FIG. 8 is a front view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is a top view thereof;

FIG. 11 is a bottom view thereof; and,

FIG. 12 is a right side view thereof, with the left side view thereof being a mirror image.

Where included, the use of stippling is provided to show a contrast in appearance that is part of the claimed design.