Gas heater
FIG. 1 is a front view of the gas heater showing my new design; 
     FIG. 2 is a rear view thereof; 
     FIG. 3 is a view of one side thereof; 
     FIG. 4 is a view of the opposite side thereof; 
     FIG. 5 is a perspective view showing the top and front thereof. 
     The pattern of perforations which is fragmentarily shown in FIG. 1 is understood to repeat uniformly and continuously across the entire indicated area.