Briefly summarized, according to one aspect of the present invention, a hydrotherapy unit comprises a housing and an elongated open tub mounted on {HEAD ~ the housing} for holding {TAIL ~ a volume} of fluid 
for holding
Briefly summarized , according to one aspect of the present invention , a hydrotherapy unit comprises a housing and an elongated open tub mounted on { HEAD ~ the housing } for holding { TAIL ~ a volume } of fluid
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH