Heat exchanger grid for an electric heater
FIG. 1 is a perspective view of a heat exchange grid for an electric heater showing our new design; 
     FIG. 2 is a front elevational view, the rear elevation being a mirror image thereof; 
     FIG. 3 is an enlarged fragmentary sectional view, taken along line 3--3 of FIG. 2; 
     FIG. 4 is an enlarged fragmentary sectional view, taken along line 4--4 of FIG. 2; 
     FIG. 5 is an enlarged fragmentary sectional view, taken along line 5--5 of FIG. 2; 
     FIG. 6 is an enlarged fragmentary sectional view, taken along line 6--6 of FIG. 2.