The ornamental design for a body for a portableheater, as shown and described.
FIG. 1 is a right side front perspective view of a body for a portable heater showing my new design;
FIG. 2 is a left side rear perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a rear elevation view thereof; and,
FIG. 7 is a top plan view thereof.
The broken line showing of front upper grill, front lower grill, top control and support base represent unclaimed portions and form no part of the claimed design.