Heater

FIG. 1 is a perspective view of a heater, showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is an enlarged top plan view thereof;

FIG. 8 is an enlarged bottom plan view thereof;

FIG. 9 is an enlarged view of portion 9 shown in FIG. 1 ;

FIG. 10 is an enlarged view of portion 10 shown in FIG. 2 ;

FIG. 11 is an enlarged view of portion 11 shown in FIG. 2 ; and,

FIG. 12 is an enlarged view of portion 12 shown in FIG. 4 .

The evenly spaced broken lines in the drawings depict portions of the heater that form no part of the claimed design. The dot dash dot broken lines denote the boundaries of the detail areas and form no part of the claimed design.