In FIGS 1 6, {TAIL ~ a tub} or spa 10 has {HEAD ~ a looping, upstanding, self supporting, lightweight side wall} 11 
In FIGS 1 6 , { TAIL ~ a tub } or spa 10 has { HEAD ~ a looping , upstanding , self supporting , lightweight side wall } 11
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH