FIG. 1 is a top perspective view of a heater showing my new design;
FIG. 2 is a front view of the heater of FIG. 1;
FIG. 3 is a left side view of the heater of FIG. 1, the right side view being a mirror image thereof;
FIG. 4 is a rear view of the heater of FIG. 1;
FIG. 5 is a top view of the heater of FIG. 1;
FIG. 6 is a bottom view of the heater of FIG. 1;
FIG. 7 is a partial cross-sectional view of the heater of FIG. 1. taken at line 7-7 of Fig
FIG. 8 is a top perspective view of the heater shown in FIG. 1 but with an alternate unclaimed environmental structure;
FIG. 9 is front view of the heater of FIG. 8;
FIG. 10 is a top view of the heater of FIG. 8;
FIG. 11 is a left side view of the heater of FIG. 8, the right side view being a mirror image thereof; and,
FIG. 12 is a partial cross-sectional view of the heater of FIG. 8 taken at line 12-12 of FIG. 8.
The broken lines shown in the views depict environmental subject matter only and form no part of the claimed design.